- Dominic West
- Â Detective James 'Jimmy' McNulty / ... 60 episodes, 2002-2008
- John Doman
- Â Deputy Commissioner for Operations William A. Rawls / ... 60 episodes, 2002-2008
- Deirdre Lovejoy
- Â A.S.A. Rhonda Pearlman 60 episodes, 2002-2008
- Wendell Pierce
- Â Detective William 'Bunk' Moreland 60 episodes, 2002-2008
- Lance Reddick
- Â Lieutenant Cedric Daniels / ... 60 episodes, 2002-2008
- Sonja Sohn
- Â Detective Shakima 'Kima' Greggs 60 episodes, 2002-2008
- Seth Gilliam
- Â Sergeant Ellis Carver / ... 60 episodes, 2002-2008
- Domenick Lombardozzi
- Â Detective Thomas 'Herc' Hauk / ... 60 episodes, 2002-2008
- Clarke Peters
- Â Detective Lester Freamon 59 episodes, 2002-2008
- Andre Royo
- Â Reginald 'Bubbles' Cousins 52 episodes, 2002-2008
- Michael Kenneth Williams
- Â Omar Little 50 episodes, 2002-2008
- Jim True-Frost
- Â Detective Roland 'Prez' Pryzbylewski / ... 50 episodes, 2002-2008
- Frankie Faison
- Â Acting Commissioner Ervin H. Burrell / ... 47 episodes, 2002-2008
- Corey Parker Robinson
- Â Detective Leander Sydnor 45 episodes, 2002-2008
- Delaney Williams
- Â Sergeant Jay Landsman 44 episodes, 2002-2008
- J.D. Williams
- Â Preston 'Bodie' Broadus 42 episodes, 2002-2006
- Wood Harris
- Â Avon Barksdale 38 episodes, 2002-2008
- Idris Elba
- Â Russell 'Stringer' Bell 37 episodes, 2002-2004
- Aidan Gillen
- Â Councilman Thomas 'Tommy' Carcetti / ... 35 episodes, 2004-2008
- Jamie Hector
- Â Marlo Stanfield 32 episodes, 2004-2008
- Gbenga Akinnagbe
- Â Chris Partlow / ... 27 episodes, 2002-2008
- Robert Wisdom
- Â Howard 'Bunny' Colvin / ... 27 episodes, 2003-2008
- Anwan Glover
- Â Slim Charles 26 episodes, 2004-2008
- Felicia Pearson
- Â Felicia 'Snoop' Pearson 23 episodes, 2004-2008
- Chad L. Coleman
- Â Dennis 'Cutty' Wise 26 episodes, 2004-2008
- Tray Chaney
- Â Malik 'Poot' Carr 24 episodes, 2002-2008
- Michael Kostroff
- Â Maurice 'Maury' Levy 25 episodes, 2002-2008
- Isiah Whitlock Jr.
- Â State Senator R. Clayton 'Clay' Davis 23 episodes, 2002-2008
- Robert F. Chew
- Â Joseph 'Proposition Joe' Stewart 23 episodes, 2002-2008
- Michael Salconi
- Â Officer Michael 'Sanny' Santangelo / ... 23 episodes, 2002-2008
- Reg E. Cathey
- Â Norman Wilson 23 episodes, 2006-2008
- Jermaine Crawford
- Â Duquan 'Dukie' Weems 23 episodes, 2006-2008
- Tristan Mack Wilds
- Â Michael Lee 23 episodes, 2006-2008
- Glynn Turman
- Â Mayor Clarence V. Royce / ... 22 episodes, 2004-2008
- Edward T. Norris
- Â Det. Edward Norris 20 episodes, 2002-2008
- Amy Ryan
- Â Off. Beatrice 'Beadie' Russell 20 episodes, 2003-2008
- Al Brown
- Â Maj. Stanislaus Valchek / ... 19 episodes, 2002-2008
- Richard Burton
- Â Sean 'Shamrock' McGinty 15 episodes, 2003-2004
- Benjamin Busch
- Â Off. Anthony Colicchio 15 episodes, 2004-2008
- Ryan Sands
- Â Off. Lloyd 'Truck' Garrick 7 episodes, 2004-2008
- Hassan Johnson
- Â Roland 'Wee-Bey' Brice 19 episodes, 2002-2008
- Brian Anthony Wilson
- Â Det. Vernon Holley 17 episodes, 2002-2008
- Gregory L. Williams
- Â Det. Michael Crutchfield 14 episodes, 2004-2008
- Lawrence Gilliard Jr.
- Â D'Angelo Barksdale 18 episodes, 2002-2004
- Jay Landsman
- Â Lt. Dennis Mello / ... 16 episodes, 2003-2008
- Thuliso Dingwall
- Â Kenard 14 episodes, 2004-2008
- Paul Ben-Victor
- Â Spiros 'Vondas' Vondopoulos 17 episodes, 2003-2008
- Edward Bernard Green Jr.
- Â Spider 11 episodes, 2004-2008
- Kwame Patterson
- Â 'Monk' Metcalf 9 episodes, 2006-2008
- Maria Broom
- Â Marla Daniels 16 episodes, 2002-2008
- Frederick Strother
- Â State Delegate Odell Watkins 16 episodes, 2004-2008
- Richard DeAngelis
- Â Col. Raymond Foerster / ... 13 episodes, 2002-2006
- Peter Gerety
- Â Judge Daniel Phelan 14 episodes, 2002-2008
- Melanie Nicholls-King
- Â Cheryl 14 episodes, 2002-2008
- Brandy Burre
- Â Theresa D'Agostino 15 episodes, 2004-2006
- Cleo Reginald Pizana
- Â Chief of Staff Coleman Parker / ... 15 episodes, 2004-2006
- Michael Willis
- Â Andy Krawczyk 12 episodes, 2003-2008
- Leo Fitzpatrick
- Â Johnny Weeks 14 episodes, 2002-2004
- Maestro Harrell
- Â Randy Wagstaff 14 episodes, 2006-2008
- Julito McCullum
- Â Namond Brice 14 episodes, 2006-2008
- Rick Otto
- Â Off. Kenneth Dozerman 10 episodes, 2004-2008
- Pablo Schreiber
- Â Nick Sobotka 13 episodes, 2003-2008
- Michael B. Jordan
- Â Wallace 13 episodes, 2002-2004
- Method Man
- Â Melvin 'Cheese' Wagstaff 13 episodes, 2003-2008
- Doug Olear
- Â FBI Spec. Agent Terrance 'Fitz' Fitzhugh 13 episodes, 2002-2008
- Megan Anderson
- Â Jen Carcetti 12 episodes, 2004-2008
- De'Rodd Hearns
- Â Herbert De'Rodd 'Puddin' Johnson 4 episodes, 2002-2004
- Jeffrey Pratt Gordon
- Â John 'Johnny Fifty' Spamanto 3 episodes, 2003-2008
- Chris Bauer
- Â Frank Sobotka 12 episodes, 2003-2004
- James Ransone
- Â Chester 'Ziggy' Sobotka 12 episodes, 2003
- Callie Thorne
- Â Elena McNulty 12 episodes, 2002-2008
- Neal Huff
- Â Chief of Staff Michael Steintorf 12 episodes, 2006-2008
- Michael Hyatt
- Â Brianna Barksdale 12 episodes, 2002-2006
- Shamyl Brown
- Â Donette 12 episodes, 2002-2004
- Susan Duvall
- Â Assistant Principal Marcia Donnelly 12 episodes, 2006-2008
- Charley Scalies
- Â Thomas 'Horseface' Pakusa 11 episodes, 2003
- Dravon James
- Â Grace Sampson 12 episodes, 2004-2006
- Luray Cooper
- Â Nathaniel 'Nat' Coxson 10 episodes, 2003-2008
- Christopher Mann
- Â Councilman Anthony 'Tony' Gray 11 episodes, 2004-2006
- Bobby J. Brown
- Â Officer Bobby Brown 7 episodes, 2002-2008
- Wendy Grantham
- Â Shardene Innes 11 episodes, 2002-2008
- Chris Ashworth
- Â Sergei 'Serge' Malatov 10 episodes, 2003-2008
- Melvin Williams
- Â Deacon 11 episodes, 2004-2008
- Marlyne Barrett
- Â Council President Nerese Campbell 10 episodes, 2006-2008
- Kelli R. Brown
- Â Kimmy 10 episodes, 2003-2006
- Dan De Luca
- Â David Parenti 10 episodes, 2006
- Keenon Brice
- Â Aaron 'Bug' Manigault 7 episodes, 2006-2008
- Jeffrey Lorenzo
- Â Karim Williams 3 episodes, 2006
- Clark Johnson
- Â City Editor Augustus 'Gus' Haynes 10 episodes, 2008
- Tom McCarthy
- Â Scott Templeton 10 episodes, 2008
- Michelle Paress
- Â Alma Gutierrez 10 episodes, 2008
- Bill Raymond
- Â The Greek 10 episodes, 2003-2008
- David Costabile
- Â Managing Editor Thomas Klebanow 10 episodes, 2008
- S. Robert Morgan
- Â Butchie 9 episodes, 2003-2008
- Nathan Corbett
- Â Donut 10 episodes, 2006
- Antonio Cordova
- Â Michael McNulty 8 episodes, 2002-2008
- Tony D. Head
- Â Maj. Bobby Reed 7 episodes, 2002-2006
- Joilet Harris
- Â Off. Caroline Massey 6 episodes, 2004-2006
- Justin Burley
- Â Justin 4 episodes, 2004-2006
- Sam Freed
- Â Executive Editor James C. Whiting III 9 episodes, 2008
- William F. Zorzi
- Â Bill Zorzi 9 episodes, 2002-2008
- Ernest Waddell
- Â Dante 8 episodes, 2003-2004
- Brandon Young
- Â Mike Fletcher 8 episodes, 2008
- Sandi McCree
- Â De'Londa Brice 8 episodes, 2006
- Taylor King
- Â Zenobia Dawson 6 episodes, 2006
- Chris Clanton
- Â Savino Bratton 5 episodes, 2002-2008
- Troj Strickland
- Â Ricardo 'Fat Face Rick' Hendrix 7 episodes, 2004-2008
- Jason Wharton
- Â Albert Stokes 4 episodes, 2006
- Steve Earle
- Â Walon 8 episodes, 2002-2008
- Benay Berger
- Â FBI Supervisor Amanda Reese 8 episodes, 2002-2008
- Dion Graham
- Â State's Attorney Rupert Bond 8 episodes, 2006-2008
- Brandon Price
- Â Anton 'Stinkum' Artis 7 episodes, 2002
- Nat Benchley
- Â Det. Augustus Polk 6 episodes, 2002-2008
- Ramón Rodríguez
- Â Renaldo 7 episodes, 2006-2008
- Brandon Fobbs
- Â Fruit 6 episodes, 2004-2006
- Shamika Cotton
- Â Raylene Lee 6 episodes, 2006-2008
- Eric G. Ryan
- Â Sean McNulty 6 episodes, 2002-2008
- Karen Vicks
- Â Gerry 6 episodes, 2006
- R. Emery Bright
- Â Community Relations Sgt. 5 episodes, 2004
- Davon Cooper
- Â Darnell Tyson 5 episodes, 2006
- Todd Scofield
- Â Jeff Price 5 episodes, 2004-2008
- Bus Howard
- Â Vernon 'Ott' Motley 4 episodes, 2003
- Darrell Britt-Gibson
- Â Darius 'O-Dog' Hill 5 episodes, 2006-2008
- Rakiya Orange
- Â Charlene Young 5 episodes, 2006
- Rico Sterling
- Â Calvin / ... 3 episodes, 2004-2006
- Destiny Jackson-Evans
- Â Crystal Judkins 2 episodes, 2006
- Michael Potts
- Â Brother Mouzone 7 episodes, 2003-2004
- Clayton LeBouef
- Â Wendell 'Orlando' Blocker 7 episodes, 2002
- Jeffrey Fugitt
- Â Claude Diggins 7 episodes, 2003
- Stacie Davis
- Â Ms. Duquette 7 episodes, 2006
- Thomas J. McCarthy
- Â State Editor Tim Phelps / ... 6 episodes, 2008
- Robert Poletick
- Â Metro Editor Steven Luxenberg / ... 6 episodes, 2008
- Donald Neal
- Â Rewrite Man Jay Spry 6 episodes, 2008
- Mayo Best
- Â Gerard 5 episodes, 2004
- Norris Davis
- Â Vinson 6 episodes, 2004-2008
- Rashad Orange
- Â Sherrod 6 episodes, 2004-2006
- Melvin T. Russell
- Â Jamal 1 episode, 2004-2006
- Kristin Proctor
- Â Aimee 6 episodes, 2003
- Boris McGiver
- Â Lt. Charles Marimow 6 episodes, 2006
- Alfonso Christian Lover
- Â Old Face Andre 6 episodes, 2006
- Erik Dellums
- Â Dr. Randall Frazier 5 episodes, 2002-2004
- Susan Rome
- Â Asst. State's Atty. Ilene Nathan 5 episodes, 2002-2006
- Brandan T. Tate
- Â Sapper 4 episodes, 2004
- Jonnie Brown
- Â Off. Eddie Walker 4 episodes, 2006
- Lev Gorn
- Â Eton Ben-Eleazer 3 episodes, 2003
- Kelvin Davis
- Â La La 3 episodes, 2003
- Richard Pelzman
- Â Little Big Roy 3 episodes, 2003-2008
- Sho Brown
- Â Phil Boy 4 episodes, 2004-2008
- Tyrell Baker
- Â Little Kevin 3 episodes, 2006
- Tyreeka Freamon
- Â School Receptionist / ... 3 episodes, 2002-2006
- Larry Andrews
- Â Donnie 3 episodes, 2006-2008
- Na'Dria Jennings
- Â Chandra Porter 3 episodes, 2006
- Perry Blackmon
- Â Perry 1 episode, 2002-2004
- Rico Whelchel
- Â Rico 1 episode, 2002-2004
- Michael Coley
- Â Kwame / ... 1 episode, 2006
- Teddy Cañez
- Â George 'Double G' Glekas 5 episodes, 2003
- Lance Irwin
- Â Maui 5 episodes, 2003
- David E. Goodman
- Â Budget Director 5 episodes, 2006-2008
- Richard Hidlebird
- Â Principal Claudell Withers 4 episodes, 2006
- Kara Lee Duncan
- Â Regional Affairs Editor Rebecca Corbett / ... 4 episodes, 2008
- Dennis Hill
- Â Det. Christeson 5 episodes, 2008
- Addison Switzer
- Â Country 3 episodes, 2003-2004
- Gary D'Addario
- Â Grand Jury Prosecutor Gary DiPasquale 4 episodes, 2003-2008
- Micaiah Jones
- Â Wintell 'Little Man' Royce 2 episodes, 2002
- DeAndre McCullough
- Â Lamar 2 episodes, 2003-2004
- Derren Fuentes
- Â Lt. Torret 2 episodes, 2002-2004
- Lee E. Cox
- Â Off. Aaron Castor 2 episodes, 2004-2008
- Derrick Purvey
- Â Big Guy 2 episodes, 2006-2008
- Robert Hogan
- Â Louis Sobotka 4 episodes, 2003
- Michael Kevin Darnall
- Â Brandon Wright 4 episodes, 2002
- Edwina Findley
- Â Tosha Mitchell 4 episodes, 2003-2004
- Donnell Rawlings
- Â Damien 'Day-Day' Price 4 episodes, 2002-2008
- Bruce Kirkpatrick
- Â Roger Twigg 4 episodes, 2008
- Mia Arnice Chambers
- Â Squeak 4 episodes, 2004
- Melvin Jackson Jr.
- Â Bernard 4 episodes, 2004
- Curtis Montez
- Â Sterling 3 episodes, 2002
- Michael Stone Forrest
- Â Det. Frank Barlow 3 episodes, 2002-2008
- Gene Terinoni
- Â Lt. Jimmy Asher 4 episodes, 2006-2008
- Cyrus Farmer
- Â Devar Manigault 3 episodes, 2006-2008
- Duane Chandler Rawlings
- Â Nathaniel 'Hungry Man' Manns 3 episodes, 2006-2008
- Eugene R. Little
- Â Cutty's Boss 3 episodes, 2004-2006
- Eisa Davis
- Â Bubbles' Sister 3 episodes, 2002-2008
- Gary 'D. Reign' Senkus
- Â Frog 2 episodes, 2003-2008
- Brook Yeaton
- Â Michael 'White Mike' McArdle 2 episodes, 2003
- Denise Hart
- Â Miss Anna Jeffries / ... 2 episodes, 2002-2006
- Gil Deeble
- Â Hucklebuck 2 episodes, 2002-2008
- Armando Cadogan Jr.
- Â Bubbles' Tormentor 2 episodes, 2006
- Doug Lory
- Â Big Roy 1 episode, 2003
- Doug Roberts
- Â State's Attorney Steven Demper 1 episode, 2002-2006
- J. Valenteen Gregg
- Â Chess 1 episode, 2003
- Jonathan D. Wray
- Â Tank 1 episode, 2003-2004
- Derek Horton
- Â Off. Brian Baker 1 episode, 2004-2008
- Brian E. McLarney
- Â Off. Brian McLarney 1 episode, 2006-2008
- Tom Quinn
- Â Det. Patrick Mahon 3 episodes, 2002
- Tom Mardirosian
- Â Agent Kristos Koutris 3 episodes, 2003
- Lance Williams
- Â John Bailey 3 episodes, 2002
- Keith Flippen
- Â Bruce DiBiago 3 episodes, 2003
- Joe Urla
- Â U.S. Attorney for the District of Maryland 3 episodes, 2008
- Kevin McKelvey
- Â F.B.I. Agent 3 episodes, 2003
- William Zielinski
- Â Gene 3 episodes, 2004
- William L. Thomas
- Â F.B.I. Agent / ... 3 episodes, 2003
- Genevieve Hudson-Price
- Â Dee Dee 3 episodes, 2004-2008
- Scott Shane
- Â Scott Shane 3 episodes, 2008
- Ptolemy Slocum
- Â Business Card Homeless Man 3 episodes, 2008
- Sheila Gaskins
- Â Mrs. Anderson 3 episodes, 2006
- Jarvis W. George
- Â 'Ronnie Mo' Watkins 2 episodes, 2002
- Shenia Hatchett
- Â Miss Sheperdson 3 episodes, 2006
- Toni Lewis
- Â F.B.I. Agent / ... 2 episodes, 2002-2003
- Dave Ettlin
- Â Dave Ettlin 3 episodes, 2008
- Fredro Starr
- Â Marquis 'Bird' Hilton 2 episodes, 2002-2003
- Elisabeth Noone
- Â Joan Sobotka 2 episodes, 2003
- Reggie Alvin Green
- Â Arabber 3 episodes, 2008
- Dawn Ursula
- Â Lolita Colvin 2 episodes, 2006-2008
- Marty Lodge
- Â Banisky 2 episodes, 2004
- Curt Boushel
- Â Andy 2 episodes, 2008
- Dave Trovato
- Â Maj. Walter Cantrell / ... 1 episode, 2002-2006
- Antonio D. Charity
- Â CO Dwight Tilghman 1 episode, 2003
- Barnett Milton Lloyd
- Â Maj. Marvin Taylor 1 episode, 2004
- Stanley Boyd
- Â Cherry / ... 1 episode, 2002-2008
- Tommy Hahn
- Â FBI Special Agent Salmond 1 episode, 2003
- Sheila Cutchlow
- Â Miss Sheperdson 1 episode, 2006
- Tamieka Chavis
- Â Royce's Assistant 1 episode, 2006
- Mark Joy
- Â Ed Bowers 1 episode, 2006
- Ingrid Cornell
- Â Nakeesha Lyles 2 episodes, 2002
- Caroline G. Pleasant
- Â Bodie's Grandmother 2 episodes, 2002
- Clarence Clemons
- Â Roman 2 episodes, 2004
- Tel Monks
- Â Father Jerome Lewandowski 2 episodes, 2003
- Sam Coppola
- Â Former Mayor 'Young Tony' 2 episodes, 2006
- Christopher Glenn Wilson
- Â DEA Agent 2 episodes, 2002
- Elijah Grant Johnson
- Â Elijah 2 episodes, 2006-2008
- Felix Stevenson
- Â Rev. Frank Reid / ... 2 episodes, 2004-2006
- Tiara Harris
- Â Devonne 2 episodes, 2004
- Fran Boyd
- Â Needle Exchange Worker / ... 2 episodes, 2004-2008
- Daniel Lee Robertson III
- Â Shaun Williams 2 episodes, 2006
- Kim Bogues
- Â Woman 2 episodes, 2004-2008
- Franklin Ojeda Smith
- Â Minister 2 episodes, 2006
- Crissandra Spencer
- Â Cassandra Spencer / ... 2 episodes, 2008
- Roscoe Orman
- Â Off. Oscar Requer 2 episodes, 2008
- Katherine Schmoke
- Â Miss Mason 2 episodes, 2006
- Devin Tweedy
- Â Man 2 episodes, 2006
- Aubrey Deeker Hernandez
- Â Terry Hanning 2 episodes, 2008
- William Joseph Brookes
- Â Lawrence Butler 2 episodes, 2008
- Jason Parker
- Â Off. Reggie Leddett 2 episodes, 2006
- Brendan Walsh
- Â Brendan Walsh 2 episodes, 2008
- Thomas C. Hessenauer
- Â Middle School Teacher / ... 2 episodes, 2006
- Stephen Schnetzer
- Â Robert Ruby 2 episodes, 2008
- Corbin Smith
- Â Monell 2 episodes, 2006-2008
- Yolanda Gaskins
- Â School Board Representative 2 episodes, 2006
- Jeffrey Wendell Moffatt
- Â Stanfield Muscle / ... 2 episodes, 2006-2008
- Russ Widdall
- Â Ron Lowenthal 2 episodes, 2008
- Ken Ulman
- Â Reporter 2 episodes, 2008
- Joey Perillo
- Â Medical Examiner Front Desk 2 episodes, 2008
- Marybeth Wise
- Â Off. Karen 2 episodes, 2008
- Connor Aikin
- Â Jack Russell 2 episodes, 2008
- Reginald Gilmer
- Â Man 2 episodes, 2006-2008
- Merritt Wever
- Â Prissy 1 episode, 2003
- Larry Hull
- Â William Gant 1 episode, 2002
- Jimmie Jelani Manners
- Â Kevin Johnston 1 episode, 2002
- Kevin Murray
- Â Special Agent Kleary 1 episode, 2003
- Kurt L. Schmoke
- Â Health Commissioner 1 episode, 2004
- Alan V. Poulson
- Â Developer 2 episodes, 2006-2008
- Dionne Audain
- Â Social Worker 2 episodes, 2008
- Jeorge Bennett Watson
- Â Marvin Browning 1 episode, 2002
- Jon Garcia
- Â Ringo 1 episode, 2003
- Kay Lawal
- Â Meeting Woman 1 episode, 2004
- Gordana Rashovich
- Â Ilona Petrovich 1 episode, 2003
- DeJuan Anderson
- Â Little Bunk 1 episode, 2004-2006
- Curtis McClarin
- Â Florist 1 episode, 2003-2008
- Imani Nia Robinson
- Â Myisha 1 episode, 2006
- Kim Tuvin
- Â Judge Emily Johnson 1 episode, 2002-2008
- Isis McCray
- Â Tiff 1 episode, 2006
- Jason Moffett
- Â Off. Tony 1 episode, 2008
- Vincent M. Ward
- Â Butchie's Bodyguard 1 episode, 2008
- Joey Odoms
- Â Corner Boy / ... 1 episode, 2006-2008
- Sophia Ayoud
- Â Cary Russell 1 episode, 2008
- Neko Parham
- Â State Police Undercover Troy Wiggins 1 episode, 2002
- LaTonya Borsay
- Â Orlando's dancer 1 episode, 2002
- Maurice Blanding
- Â Basketball player 1 episode, 2002
- Jefferson Breland
- Â Basketball coach 1 episode, 2002
- The Nighthawks
- Â The Nighthawks 1 episode, 2003
- Henri Edmonds
- Â School Lecturer 1 episode, 2006
- Lucy Newman-Williams
- Â Asst. State's Atty. Taryn Hanson 1 episode, 2002
- Giselle Watts
- Â Darcia Wallace 1 episode, 2002
- Michael Mack
- Â Special Agent Marcus Lemmel 1 episode, 2003
- Gerard Ender
- Â Sam 1 episode, 2003
- Lizan Mitchell
- Â Shooting Witness 1 episode, 2002
- Verna Day
- Â Resident 1 episode, 2004
- Robin Skye
- Â Madam LaRue 1 episode, 2002
- Dick Stilwell
- Â Commissioner Warren Frazier 1 episode, 2002
- Stan Stewart
- Â New Charles 1 episode, 2003
- Katana Lazet Hall
- Â Savino's mother 1 episode, 2002
- Richard Price
- Â Book Group Leader 1 episode, 2003
- Jonathan Orcutt
- Â Sheriff Robert Spore 1 episode, 2004
- Barry Bradford
- Â Stash House Man 1 episode, 2002
- Stephen F. Schmidt
- Â Brice's attorney 1 episode, 2002
- Nina Hodoruk
- Â State's Atty. Kendall Remnick 1 episode, 2004
- Bill Murphy
- Â Bill Murphy 1 episode, 2008
- Vera Holley
- Â The Principal 1 episode, 2004
- Norman Jackson
- Â Lex 1 episode, 2006
- Gloria Phillips
- Â Bereaved Mother 1 episode, 2003
- Muna Otaru
- Â Student in Registrar's Office 1 episode, 2004
- Phillip Burgess
- Â Security Guard 1 episode, 2006
- Richard Belzer
- Â John Munch 1 episode, 2008
- Nancy Grace
- Â Nancy Grace 1 episode, 2008
- Aphrodite Georgelakos
- Â Waitress 1 episode, 2003
- Michael Mosley
- Â Raymond Wiley 1 episode, 2008
- Anthony Mangano
- Â Det. Kevin Infante 1 episode, 2008
- Clifton Gross
- Â Stevedore 1 episode, 2003
- Tiffani Holland
- Â Chiquan 1 episode, 2006
- Robert Ehrlich
- Â Security Guard 1 episode, 2006
- Frank Reid
- Â Reverend 1 episode, 2006
- Kristie Dale Sanders
- Â Det. Nancy Porter 1 episode, 2008
- Steve Lukiewski
- Â Phil the Dispatcher 1 episode, 2003
- Dennis Lehane
- Â Off. Sullivan 1 episode, 2004
- Johnnett Kent
- Â Sharon Jones 1 episode, 2006
- Lenny Hamm
- Â Det. Lenny Hamm 1 episode, 2008
- Jackie Sawiris
- Â TV Reporter 1 episode, 2003
- Dameion Leslie
- Â Man 1 episode, 2004
- Greg Ainsworth
- Â Richard Switowski 1 episode, 2006
- Charmaine McPhee
- Â Laetitia 1 episode, 2006
- Cynthia Webb
- Â Teacher #2 1 episode, 2006
- Nikki Lusk
- Â Woman 1 episode, 2006
- Tevin Brown
- Â Man 1 episode, 2006
- Paul G. Sepczynski
- Â Stevedore 1 episode, 2003
- Stacie Williams
- Â Gail 1 episode, 2006
- David Fonteno
- Â Poker Winner 1 episode, 2006
- Jim Ancel
- Â Man 1 episode, 2008
- Donald Worden
- Â Det. Donald Worden 1 episode, 2008
- Damon Henderson
- Â Pastor 1 episode, 2008
- Jaymes Jorsling
- Â Vincent 1 episode, 2008
- Robert G. McKay
- Â Rep. Albert Upshaw 1 episode, 2008
- Marc Steiner
- Â Debate Moderator 1 episode, 2006
- Chynna Gray
- Â Woman 1 episode, 2006
- Ron Tucker
- Â Western District Officer 1 episode, 2008
- Della Ford
- Â Woman 1 episode, 2006
- Zakiya Jefferson
- Â Woman 1 episode, 2006
- Suzanne Wooton
- Â Suzanne Wooton 1 episode, 2008
- Paul L. Nolan
- Â Hardware Store Employee 1 episode, 2006
- Lora Reed
- Â Woman 1 episode, 2006
- Dominick Cicco
- Â Andreas 1 episode, 2008
- Larry Young
- Â Shark 1 episode, 2008
- Willa Bickham
- Â Willa Bickham 1 episode, 2008
- Jim Rood
- Â Patrolman 1 episode, 2006
- Gordon Timothy
- Â Anthony Wardell 1 episode, 2006
- Sarah Desage
- Â Bank Teller 1 episode, 2008
- Bryan Anderson
- Â Marino 1 episode, 2008
- Dan Manning
- Â Asst. Medical Examiner 1 episode, 2008
- Queen Nzinga Ama Linton
- Â Female Rail Passenger 1 episode, 2006
- Michael Rivera
- Â Renaldo's Friend 1 episode, 2008
- Arthur Laupus
- Â Appointment Homeless Man 1 episode, 2008
- Kate Revelle
- Â Jane 1 episode, 2008
- Jeff Roberts
- Â Employed Homeless Man 1 episode, 2008
- Kelley Slagle
- Â Asst. Medical Examiner 1 episode, 2008
- Baye C. Harrell
- Â Hack Driver 1 episode, 2008
- Kathy Lally
- Â Kathy Lally 1 episode, 2008
- Leroy Graves Jr.
- Â Man 1 episode, 2008
- Stuart Evered
- Â Detective 1 episode, 2008
- Kayte Grace
- Â Ava 1 episode, 2006
- Seymour Horowitz
- Â Grieving Father 1 episode, 2008
- John Badila
- Â Sun Staff Member 1 episode, 2008
- Kristian King Lewman
- Â Asst. Medical Examiner Diane Lerner 1 episode, 2008
- Pam Spiliadis
- Â Pam Spiliadis 1 episode, 2008
- Amy Lee
- Â Store Owner 1 episode, 2008
- De'Ante McCullough
- Â Boy 1 episode, 2006
- Jack Seeley
- Â Bigoted Voter 1 episode, 2006
- Joe DiBlassi
- Â Joseph J. DiBlasi 1 episode, 2006
- Rosemary Knower
- Â Grieving Mother 1 episode, 2008
- Valerie Leonard
- Â Washington Post Staff Member 1 episode, 2008
- Eric Messner
- Â Alma's Boyfriend 1 episode, 2008
- Erica Chamblee
- Â Pregnant Woman 1 episode, 2008
- Denise Preddy
- Â Miss Ella 1 episode, 2006
- Ayanna S. Flemings
- Â Woman 1 episode, 2008
- Jayne Miller
- Â Jayne Miller 1 episode, 2008
- Rasheila Daniels
- Â Woman 1 episode, 2008
- Dante Painter Jr.
- Â DeShawn 1 episode, 2008
- John Fairley
- Â Man 1 episode, 2008
- Jasmine Pitts
- Â Miss Rennert 1 episode, 2006
- Joe Inscoe
- Â FBI Deputy Director Arthur Tolan 1 episode, 2008
- Vickie Warehime
- Â Patrol Sergeant 1 episode, 2008
- Joe Hansard
- Â Nathan Levi Boston 1 episode, 2008
- Tracy Teague
- Â McNulty's Date 1 episode, 2008
- Rachel Lynn Dinenna
- Â Woman 1 episode, 2008
- Jerry Whiddon
- Â Washington Post Editor 1 episode, 2008
- Corbin Smith
- Â Monell 1 episode, 2006
- Miriam A. Hyman
- Â Social Worker 1 episode, 2008
- Peter Linari
- Â Pete the Bartender 1 episode, 2008
- Frank McPartland
- Â Angry Baseball Fan 1 episode, 2008
- Theodore M. Snead
- Â Sports Editor 1 episode, 2008
- William R. Johnson
- Â FBI Agent 1 episode, 2008
- Carlos Juan Gonzalez
- Â Man 1 episode, 2008
- Reid Sasser
- Â Director of National Drug Control Policy 1 episode, 2004
- Andrew Roth
- Â Tim Packard 1 episode, 2008
- Laura Lippman
- Â Self 1 episode, 2008
- Paul Morella
- Â FBI Profiler 1 episode, 2008
- Tony Tsendeas
- Â Homeless Man #2 1 episode, 2008
- Nathan James
- Â Officer 1 episode, 2008
- Neerja Sharma
- Â Woman Interviewed 1 episode, 2008
- John Brennan
- Â Banker #2 1 episode, 2008
- Richard Welchel
- Â Man 1 episode, 2006
- Alexandra Tydings
- Â Arts Editor 1 episode, 2008
- Tim McAdams
- Â Motorist 1 episode, 2008
- Tasha Rudolph
- Â Abusive Mother 1 episode, 2008
- Michael Olesker
- Â Self 1 episode, 2008
- Jon Jolles
- Â Sun Librarian 1 episode, 2008
- Sarah Grace Hart
- Â Six Flags Girl #1 1 episode, 2008
- D.L. Hopkins
- Â Driver 1 episode, 2008
- Andrew Cruttenden
- Â Man 1 episode, 2008
- Melody Williams
- Â Woman at Crime Scene #1 1 episode, 2008
- Alan J. Wendl
- Â Desk Sergeant 1 episode, 2008
- Melvina Williams
- Â Woman at Crime Scene #2 1 episode, 2008
- Charlie Limber
- Â Man 1 episode, 2008
- Christine Lee
- Â Store Clerk 1 episode, 2008
- Ayoka Dorsey
- Â Gus's Wife 1 episode, 2008
- Jim Scopelitis
- Â Banker #1 1 episode, 2008
- Tyson Hall
- Â Marvin 1 episode, 2008
- Dimitros 'Jimmy' Stakias
- Â Greek Deliveryman 1 episode, 2008
- Sophia Wang
- Â Six Flags Girl #2 1 episode, 2008
- Adrienne Meisel
- Â Recovering addict 1 episode, 2008
- Juhahn Jones
- Â Drug Dealer 1 episode, 2008
- Patricia Penn
- Â Sun Staff Member 1 episode, 2008
- Steve Zettler
- Â Prison Guard 1 episode, 2008
- Carl Schoettler
- Â Carl Schoettler 1 episode, 2008
- Jermaine Shorts
- Â Man 1 episode, 2008
- Jay Spadaro
- Â Officer 1 episode, 2008
- Clinton 'Shorty' Buise
- Â Clinton 'Shorty' Buise 1 episode, 2008
- Henry Carter
- Â Man 1 episode, 2008
- Chris Kies
- Â Petey 1 episode, 2008
- Stephen Kinigopoulos
- Â Officer 1 episode, 2008
- Edward C. Lewis
- Â Man 1 episode, 2008
- George Smith
- Â Man 1 episode, 2008
- Jeff Wincott
- Â Johnny Weaver 1 episode, 2008
- Sabrina Flores
- Â Girl 1 episode, 2006
- Michael Ahl
- Â Detective / ... (uncredited) 24 episodes, 2003-2008
- David L. Marston
- Â Newspaper Photographer / ... (uncredited) 13 episodes, 2002-2006
- Robert F. Colesberry
- Â Det. Ray Cole (uncredited) 12 episodes, 2002-2003
- Vicki Jean Clark
- Â Banquet Attendee / ... (uncredited) 12 episodes, 2004-2008
- Thomas W. Stewart
- Â Banquet Attendee / ... (uncredited) 12 episodes, 2004-2008
- Enrique Chicas
- Â Bailiff / ... (uncredited) 10 episodes, 2002-2006
- Jennifer Rouse
- Â Whiting's Secretary / ... (uncredited) 10 episodes, 2003-2008
- Art Hall
- Â Reporter (uncredited) 10 episodes, 2008
- Dave Ehrman
- Â Researcher / ... (uncredited) 9 episodes, 2006-2008
- Anthony Bosco
- Â The Sun Copy Editor (uncredited) 9 episodes, 2008
- James E. Ash
- Â Uniform Officer / ... (uncredited) 7 episodes, 2002-2004
- Jill Redding
- Â Delores (uncredited) 7 episodes, 2003
- Karl Otter
- Â District Commander (uncredited) 7 episodes, 2004-2008
- Dana Jay
- Â Gangmember (Omars Crew) Camera Man (uncredited) 7 episodes, 2004-2008
- Patrick Michael Strange
- Â Reporter (uncredited) 7 episodes, 2008
- Mike D. Anderson
- Â Ghost (uncredited) 6 episodes, 2004-2008
- Marcus LaRon
- Â Police Officer (uncredited) 6 episodes, 2004-2008
- Tamara Johnson
- Â Lieut. Cindy Lowry (uncredited) 6 episodes, 2004
- Larry Carter
- Â Reporter (uncredited) 6 episodes, 2008
- Vito Pietanza
- Â FBI Agent (uncredited) 5 episodes, 2002-2004
- Darrell M. Smith
- Â School Officer Turner / ... (uncredited) 5 episodes, 2004-2006
- Zach Book
- Â The Sun Graphics Designer (uncredited) 5 episodes, 2008
- Tom Townsend
- Â Grand Juror (uncredited) 5 episodes, 2008
- Demetria Bailey
- Â Perlene Scott / ... (uncredited) 4 episodes, 2004-2006
- Robert Neal Marshall
- Â Comstat Police Major (uncredited) 4 episodes, 2004
- Edonis Washington
- Â Latroy (uncredited) 4 episodes, 2004
- Esley Tate
- Â Boo (uncredited) 4 episodes, 2004
- Kahil Dotay
- Â Undercover Street Cop / ... (uncredited) 4 episodes, 2004
- Diana Villamonte
- Â Rachel Shapiro (uncredited) 4 episodes, 2006
- Kevyn Settle
- Â Sun Paper Layout Editor (uncredited) 4 episodes, 2008
- David J. Smolar
- Â Newspaper Reporter / ... (uncredited) 3 episodes, 2002-2006
- Jerome Ro Brooks
- Â Drug Dealer (uncredited) 3 episodes, 2002
- Aaron Moss
- Â Drug Dealer (uncredited) 3 episodes, 2002
- Aaron J. Savage
- Â Barksdale Crew Member / ... (uncredited) 3 episodes, 2002
- Daniel Ross
- Â Camera Assistant Channel 11 News / ... (uncredited) 3 episodes, 2003-2004
- Oleg Prudius
- Â Henchman (uncredited) 3 episodes, 2003
- Leslie Elliard
- Â Off. Kevin Reynolds (uncredited) 3 episodes, 2003
- Randall Boffman
- Â Bill Anderson - Port Admin. Port of Baltimore (uncredited) 3 episodes, 2003
- James Lewis
- Â Marvin / ... (uncredited) 3 episodes, 2004-2006
- Stephen Zaleski
- Â Coroner (uncredited) 3 episodes, 2004-2006
- Raw Leiba
- Â Stringer's Bodyguard (uncredited) 3 episodes, 2004
- Nakia Dillard
- Â Off. Lambert (uncredited) 3 episodes, 2004
- Ted Borodaeff
- Â Boyfriend of William Rawls / ... (uncredited) 3 episodes, 2006-2008
- Nora Bauer
- Â Business Traveler / ... (uncredited) 3 episodes, 2006-2008
- Marshall Jefferies
- Â Corner boy / ... (uncredited) 3 episodes, 2006-2008
- Brian Dragonuk
- Â Bar Patron / ... (uncredited) 3 episodes, 2006
- Chad Ridgely
- Â Justin Cook (uncredited) 3 episodes, 2008
- Elizabeth Mary Nolan
- Â Reporter (uncredited) 3 episodes, 2008
- Aubrohn King
- Â Reporter / ... (uncredited) 3 episodes, 2008
- William Shipman
- Â Detective Western District / ... (uncredited) 2 episodes, 2002-2004
- Dakota Anderson
- Â Muggs / ... (uncredited) 2 episodes, 2002-2003
- Aaron Michael Lacey
- Â Maryland State Trooper / ... (uncredited) 2 episodes, 2002
- David Simon
- Â Reporter / ... (uncredited) 2 episodes, 2003-2008
- Avo Shirazee
- Â Miss Thiessen / ... (uncredited) 2 episodes, 2003-2006
- Lizz Robbins
- Â Pedestrian / ... (uncredited) 2 episodes, 2003-2004
- Christopher Haley
- Â Math Teacher / ... (uncredited) 2 episodes, 2003-2004
- Paul Majors
- Â Off. MacGaul (uncredited) 2 episodes, 2003-2004
- Donald Rey
- Â Copy Shop Employee (uncredited) 2 episodes, 2003-2004
- Jennifer Badger
- Â Slavic Drowning Victim (uncredited) 2 episodes, 2003
- Jacques Derosena
- Â Leech (uncredited) 2 episodes, 2003
- Amy Wadford
- Â Trafficked Girl (uncredited) 2 episodes, 2003
- DeLon Howell
- Â Inmate #1 (uncredited) 2 episodes, 2003
- Jeremy Nichols
- Â First Mate (uncredited) 2 episodes, 2003
- Paul D'Elia
- Â Harbor Patrol Cop (uncredited) 2 episodes, 2003
- Kevin Jiggetts
- Â Frommers (uncredited) 2 episodes, 2003
- Schuster Vance
- Â Walt Stokes (uncredited) 2 episodes, 2003
- Eric Trosman
- Â Dmitri (uncredited) 2 episodes, 2003
- Jeffrey Coleman
- Â Coast Guard Officer (uncredited) 2 episodes, 2003
- Donovan Hagins
- Â Dancer (uncredited) 2 episodes, 2003
- Bill Heneghan
- Â MPA Officer (uncredited) 2 episodes, 2003
- Harold J. Abell Sr.
- Â Moonshot (uncredited) 2 episodes, 2003
- Jonathan Pope
- Â Sergeant (uncredited) 2 episodes, 2003
- Tommy Lee Taylor Jr.
- Â Lester Sanders (uncredited) 2 episodes, 2004-2008
- Lloyd Booker
- Â Mayoral Aide / ... (uncredited) 2 episodes, 2004-2006
- Chester West
- Â Shift Lt. Dent (uncredited) 2 episodes, 2004-2006
- Rae Haskins
- Â Drug Dealer (uncredited) 2 episodes, 2004-2006
- Josh Adam Meyers
- Â Dope Fiend (uncredited) 2 episodes, 2004
- Jerry Walsh
- Â Mr. Lake (uncredited) 2 episodes, 2004
- Shaun Woodland
- Â Dealer #2 (uncredited) 2 episodes, 2004
- Lawrence Cameron Steele
- Â Police Lieutenant (uncredited) 2 episodes, 2004
- Alan Gates
- Â Off duty West Point Police Officer / ... (uncredited) 2 episodes, 2004
- Marc Krinsky
- Â Angelo Martin (uncredited) 2 episodes, 2004
- Alana Campbelle
- Â Mayor's Secretary (uncredited) 2 episodes, 2004
- Jarret Janako
- Â Stoop Thug / ... (uncredited) 2 episodes, 2006-2008
- Dave Cooperman
- Â Ball Toss Contestant / ... (uncredited) 2 episodes, 2006-2008
- Kevin L Simmons
- Â Detective (uncredited) 2 episodes, 2006-2008
- Nicole Pettis
- Â Miss Reese (uncredited) 2 episodes, 2006
- Christopher Carver
- Â Mayor Royce's Aide (uncredited) 2 episodes, 2006
- David DeBoy
- Â Detective Shea (uncredited) 2 episodes, 2006
- Derek A. Smith
- Â Construction Foreman / ... (uncredited) 2 episodes, 2006
- Atif Lanier
- Â Western District Police Officer (uncredited) 2 episodes, 2006
- Alexander Emmert
- Â Asst. D.A. Becker (uncredited) 2 episodes, 2006
- Paul Fahrenkopf
- Â High Roller / ... (uncredited) 2 episodes, 2006
- Stephanie Burden
- Â Judy Pryzbylewski (uncredited) 2 episodes, 2006
- Adrian Black
- Â High Roller / ... (uncredited) 2 episodes, 2006
- Joanna Becker
- Â High Roller / ... (uncredited) 2 episodes, 2006
- Dolly Turner
- Â Ms. Hanson (uncredited) 2 episodes, 2006
- Gina Hernandez
- Â On-Air Reporter (uncredited) 2 episodes, 2008
- Marcus Nel-Jamal Hamm
- Â Off. Marcus (uncredited) 2 episodes, 2008
- Tom Cutler
- Â Detective (uncredited) 2 episodes, 2008
- Neal McNeil
- Â Bartender (uncredited) 2 episodes, 2008
- Philip DePalo
- Â Undercover Detective / ... (uncredited) 2 episodes, 2008
- Kosha Engler
- Â Kima's Friend (uncredited) 1 episode, 2002
- Angel M. Wainwright
- Â Tywanda (uncredited) 1 episode, 2002
- Manuel Poblete
- Â The Prosecutor (uncredited) 1 episode, 2002
- Pete Burris
- Â Federal judge (uncredited) 1 episode, 2002
- Joe Gerety
- Â State Trooper (uncredited) 1 episode, 2002
- Rodney J. Hobbs
- Â Police Officer (uncredited) 1 episode, 2002
- Karen Kirschenbauer
- Â Hostess (uncredited) 1 episode, 2002
- Tia Latrell
- Â Parole Officer (uncredited) 1 episode, 2002
- Terrence Currier
- Â Roy Brown (uncredited) 1 episode, 2002
- Christopher H. Myers
- Â Courtroom Convict (uncredited) 1 episode, 2002
- Rob Stull
- Â Bar Patron (uncredited) 1 episode, 2002
- Kamal Bostic-Smith
- Â Snot Boogie's Friend (uncredited) 1 episode, 2002
- Gary Wheeler
- Â Attorney (uncredited) 1 episode, 2002
- Philip Byron
- Â Juvenile Delinquent (uncredited) 1 episode, 2002
- Nikki Bell
- Â Crack Addict (uncredited) 1 episode, 2002
- Jeffon Avin
- Â Market Manager (uncredited) 1 episode, 2002
- Mikel Miller
- Â Police Officer (uncredited) 1 episode, 2002
- Larry Derr
- Â Onion (uncredited) 1 episode, 2002
- Ron A. Williams
- Â Addict (uncredited) 1 episode, 2002
- Tony Fair
- Â Money Counter (uncredited) 1 episode, 2002
- Aaron Lee Wright
- Â Fighting Kid (uncredited) 1 episode, 2002
- Kirk Penberthy
- Â FBI Spec. Agent Arnold D. Paulette (uncredited) 1 episode, 2002
- Mike Lavoie
- Â Rookie Cop (uncredited) 1 episode, 2002
- Keith Waters
- Â Head Waiter (uncredited) 1 episode, 2002
- Walter Simpson III
- Â Crack Cocaine Addict (uncredited) 1 episode, 2002
- Michael Way
- Â Dealer (uncredited) 1 episode, 2002
- Stephen Szibler
- Â Narcotics Detective (uncredited) 1 episode, 2002
- Julian Salazar
- Â Antonio (uncredited) 1 episode, 2002
- Justin Hinnant
- Â Neighborhood Kid (uncredited) 1 episode, 2002
- SiSi Kache
- Â Mother (uncredited) 1 episode, 2002
- Marcis Turner
- Â Police Officer (uncredited) 1 episode, 2002
- Thomas Fraser
- Â Hospital Patient (uncredited) 1 episode, 2002
- Eric Ryan
- Â Sean McNulty (uncredited) 1 episode, 2002
- John Holt Hall
- Â DEA Agent In Charge (uncredited) 1 episode, 2002
- Elizabeth J. Carlisle
- Â Prostitute (uncredited) 1 episode, 2003
- Wes Johnson
- Â Security Supervisor (uncredited) 1 episode, 2003
- David Barroso
- Â Swat Team Mike Serano (uncredited) 1 episode, 2003
- Eric Buarque
- Â Long Shoreman (uncredited) 1 episode, 2003
- Lisa Bullock
- Â Waitress (uncredited) 1 episode, 2003
- Toni Hunter
- Â Stripper (uncredited) 1 episode, 2003
- Christopher Crutchfield Walker
- Â INS Agent (uncredited) 1 episode, 2003
- Billy Finnigan
- Â Bernard (uncredited) 1 episode, 2003
- David Ian McKendry
- Â Inmate (uncredited) 1 episode, 2003
- Patrick Brown
- Â Jury Foreman (uncredited) 1 episode, 2003
- Mark Kochanowicz
- Â Yuppie Husband (uncredited) 1 episode, 2003
- Stephanie Bamberger
- Â Natasha (uncredited) 1 episode, 2003
- R. Andrew Doan
- Â Extra (uncredited) 1 episode, 2003
- John Bobby
- Â Stevedore (uncredited) 1 episode, 2003
- Joseph W. Lane
- Â Corrections Officer Supervisor (uncredited) 1 episode, 2003
- David Peters
- Â Diener (uncredited) 1 episode, 2003
- Leo Rogstad
- Â Russian Mope (uncredited) 1 episode, 2003
- George 'Blue' Epps
- Â Butchie's Bar Patron (uncredited) 1 episode, 2003
- Jonas Grey
- Â Drug Buyer (uncredited) 1 episode, 2003
- George Kardulias
- Â Longshoreman (uncredited) 1 episode, 2003
- Duncan Smith
- Â Shipping Agent (uncredited) 1 episode, 2003
- Dovile Mark
- Â European Girl #2 (uncredited) 1 episode, 2003
- Daniel Garrett
- Â Gus the Bartender (uncredited) 1 episode, 2003
- E. Parker Webb
- Â Stevedore (uncredited) 1 episode, 2003
- Jonathan Watkins
- Â Tony, City Councilman (uncredited) 1 episode, 2003
- Jordan Lebowitz
- Â Visiting Room Prisoner (uncredited) 1 episode, 2003
- Stephan Collins-Stepney
- Â Drug Slinger #2 (uncredited) 1 episode, 2003
- Jim Klock
- Â Off. Gillan (uncredited) 1 episode, 2004
- Mustafa Harris
- Â Lavell Mann (uncredited) 1 episode, 2004
- Ken Arnold
- Â Car Theft Reporting Lt. (uncredited) 1 episode, 2004
- Chris McMullin
- Â Disgruntled Roll Call Sgt. (uncredited) 1 episode, 2004
- Kimberly S. Fairbanks
- Â Patrolwoman (uncredited) 1 episode, 2004
- Jameel Saleem
- Â Parolee (uncredited) 1 episode, 2004
- Akim Black
- Â Off. Tope (uncredited) 1 episode, 2004
- Eli Harris
- Â Lieutenant (uncredited) 1 episode, 2004
- Kenny Shapiro
- Â Prison Guard (uncredited) 1 episode, 2004
- Andrew Aninsman
- Â Aggravated Sergeant (uncredited) 1 episode, 2004
- Adam Michael Rose
- Â Funeral Attendant (uncredited) 1 episode, 2004
- Aaron Marcus
- Â State's Attorney (uncredited) 1 episode, 2004
- Justin Ruff
- Â Marlos crew (uncredited) 1 episode, 2004
- Ira Gamerman
- Â Homeless Man (uncredited) 1 episode, 2004
- Keith Moyer
- Â Junk Man (uncredited) 1 episode, 2004
- Brian Edwards
- Â Undercover Police Officer (uncredited) 1 episode, 2004
- Robert X. Golphin
- Â Crackhead (uncredited) 1 episode, 2004
- Krystal Browning
- Â Lesbian in Bar (uncredited) 1 episode, 2004
- Daryl D. Davis
- Â Store Clerk (uncredited) 1 episode, 2004
- Pat Romano Jr.
- Â Lieutenant (uncredited) 1 episode, 2004
- David Von Roehm
- Â Detective at Base (uncredited) 1 episode, 2004
- Bruce Allen Dawson
- Â Bar Patron (uncredited) 1 episode, 2004
- Scott Ross
- Â College Student #1 (uncredited) 1 episode, 2004
- Jay Sefton
- Â Political Analyst (uncredited) 1 episode, 2004
- Keith Johnson
- Â Desk Sergeant (uncredited) 1 episode, 2004
- Chris Slone
- Â Off. Berman (uncredited) 1 episode, 2004
- John Wooten
- Â Off. Terry Garner (uncredited) 1 episode, 2004
- Sal Darigo
- Â Harry (uncredited) 1 episode, 2004
- Sheila Hennessey
- Â TV Reporter (uncredited) 1 episode, 2004
- Walter Wiz Nichols
- Â Street Guy (uncredited) 1 episode, 2004
- Joseph DeBona
- Â State Trooper #2 (uncredited) 1 episode, 2004
- Anthony Fedd
- Â Tucky (uncredited) 1 episode, 2004
- Michael Noel
- Â Computer Technician (uncredited) 1 episode, 2004
- Lorilyn Huckstep
- Â Wealthy Homeowner (uncredited) 1 episode, 2004
- Aaron Fiore
- Â Uniformed Cop With Beer (uncredited) 1 episode, 2004
- Kerry Meushaw
- Â TV Reporter - Blue Van (uncredited) 1 episode, 2004
- Robert Albrecht
- Â Rookie Cop (uncredited) 1 episode, 2004
- MaConnia Chesser
- Â Trina (uncredited) 1 episode, 2004
- Lee Zagari
- Â Juan (uncredited) 1 episode, 2004
- Cleve Gray
- Â Crime Scene Technician (uncredited) 1 episode, 2004
- Stephen Alexander
- Â Bar Patron (uncredited) 1 episode, 2004
- Ian Bonds
- Â Drug Buyer in Car (uncredited) 1 episode, 2004
- Manny Oliverez
- Â News Cameraman (uncredited) 1 episode, 2004
- Carolyn Rawleigh
- Â Bystander (uncredited) 1 episode, 2004
- Nehal Joshi
- Â Baba Jani (uncredited) 1 episode, 2004
- Ty Robinson
- Â Street Dealer (uncredited) 1 episode, 2004
- Collin Leonard
- Â Dennis Harper (uncredited) 1 episode, 2004
- Corey Sorenson
- Â Young Cop (uncredited) 1 episode, 2006
- Carl Clemons
- Â Cheese's Muscle (uncredited) 1 episode, 2006
- Ed Moran
- Â House Detective (uncredited) 1 episode, 2006
- Jeffrey Mowery
- Â Burn Unit Doctor (uncredited) 1 episode, 2006
- Seth Hurwitz
- Â Poker Player (uncredited) 1 episode, 2006
- Tony Devon
- Â Mr. Shopper (uncredited) 1 episode, 2006
- Patrick McDade
- Â FOP President (uncredited) 1 episode, 2006
- Tamika Simpkins
- Â Mother (uncredited) 1 episode, 2006
- Frank Hansen
- Â Undercover Cop at Precinct (uncredited) 1 episode, 2006
- Stephen Graybill
- Â Undercover Cop (uncredited) 1 episode, 2006
- Brandon Larkins
- Â Uniformed Officer (uncredited) 1 episode, 2006
- Pamela Fischer
- Â Campaign Supporter (uncredited) 1 episode, 2006
- Yan Xi
- Â Waitress (uncredited) 1 episode, 2006
- Skye Dennis
- Â Paramedic (uncredited) 1 episode, 2006
- Barney Fitzpatrick
- Â B.D.C. President (uncredited) 1 episode, 2006
- Richard Cutting
- Â Uniformed Lieutenant (uncredited) 1 episode, 2006
- Darla Robinson
- Â Democratic Strategist (uncredited) 1 episode, 2006
- Rodney Roldan
- Â Young Cop (uncredited) 1 episode, 2006
- Clay Steakley
- Â Asst. Hotel Manager (uncredited) 1 episode, 2006
- Dan Franko
- Â Off. Ginter (uncredited) 1 episode, 2006
- Marvina Vinique
- Â Nurse (uncredited) 1 episode, 2006
- Usman Sharif
- Â Drug Slinger #2 (uncredited) 1 episode, 2006
- Kamal Jones
- Â Older Cop (uncredited) 1 episode, 2006
- Mike Monroe
- Â Campaign Staff (uncredited) 1 episode, 2006
- Lenecia Renée Porro
- Â News Journalist (uncredited) 1 episode, 2006
- Melissa D. Madison
- Â Lt. Grayson (uncredited) 1 episode, 2006
- Nitin Adsul
- Â Indian Shop Owner (uncredited) 1 episode, 2006
- Jonathon Ruckman
- Â Off. McFarlane (uncredited) 1 episode, 2006
- Maximillan Tapper
- Â Assassin (uncredited) 1 episode, 2006
- John Lim
- Â ER Doctor (uncredited) 1 episode, 2006
- Susan Lynskey
- Â Lip Reader (uncredited) 1 episode, 2006
- Rachel Elise Hunter
- Â Hostess (uncredited) 1 episode, 2006
- Eric Marshall
- Â Voter (uncredited) 1 episode, 2006
- Peter Defeo
- Â Election Official (uncredited) 1 episode, 2006
- Shaunté Usual
- Â Patrice (uncredited) 1 episode, 2006
- Kimelia Weathers Smith
- Â Restaurant Patron (uncredited) 1 episode, 2006
- Amsara Sekhita Mai Holly
- Â Tote's Niece (uncredited) 1 episode, 2006
- Leo Christopher Sheridan
- Â Bartender (uncredited) 1 episode, 2006
- Thomas Joe Craig
- Â Construction Foreman (uncredited) 1 episode, 2006
- Tony Bailey
- Â Charles (uncredited) 1 episode, 2006
- Norman Outlaw
- Â Orderly (uncredited) 1 episode, 2006
- Allyn Camp
- Â Detention Officer (uncredited) 1 episode, 2006
- Ciera Nicole Butts
- Â Student (uncredited) 1 episode, 2006
- Rob J. Moore
- Â Man at Boxing Match (uncredited) 1 episode, 2006
- Tony Ruggieri
- Â Amtrak Police Supervisor (uncredited) 1 episode, 2006
- Traci Law
- Â Teacher (uncredited) 1 episode, 2006
- Big Ben Kennedy
- Â Construction Foreman (uncredited) 1 episode, 2006
- Bethany Hoffman
- Â Paramedic (uncredited) 1 episode, 2006
- Chris James
- Â Carcetti's Driver (uncredited) 1 episode, 2006
- Misty Kelley
- Â Teacher (uncredited) 1 episode, 2006
- Christina Pitrelli
- Â Teacher (uncredited) 1 episode, 2006
- Robert Lee Hardy
- Â Brother (uncredited) 1 episode, 2006
- Ernest Glover
- Â Poll Worker (uncredited) 1 episode, 2006
- BJ Butler
- Â NY Dealer (uncredited) 1 episode, 2006
- Steven Moreti
- Â City Developer / ... (uncredited) 1 episode, 2006
- Brandi L. Davis
- Â Nancine Nance Owens (uncredited) 1 episode, 2006
- Brian James Harris
- Â Undercover Cop (uncredited) 1 episode, 2006
- Steve Staiger
- Â Property Developer (uncredited) 1 episode, 2006
- Courtney Irons
- Â Female Pedestrian (uncredited) 1 episode, 2006
- Kelly Anne Rohde
- Â Election Poller (uncredited) 1 episode, 2006
- Maurice Goodman
- Â Shift Lieutenant (uncredited) 1 episode, 2006
- Tanesha
- Â Ford (uncredited) 1 episode, 2006
- James Cottingham
- Â Detective (uncredited) 1 episode, 2006
- Hyi Y. Lim
- Â Convenience Store Owner (uncredited) 1 episode, 2006
- Rob Coughlin
- Â Hearse Driver (uncredited) 1 episode, 2006
- Carl Low
- Â Undercover #2B (uncredited) 1 episode, 2006
- Michael James Shaw
- Â Homeless Man (uncredited) 1 episode, 2008
- Ben Solenberger
- Â Carcetti Detail (uncredited) 1 episode, 2008
- Louis Stancil
- Â Unknown Corner Boy (uncredited) 1 episode, 2008
- Jim Jones
- Â Man on Street (uncredited) 1 episode, 2008
- Ken McNaughton
- Â Bar Patron (uncredited) 1 episode, 2008
- Juan-Pablo Veizaga
- Â CSI Police Officer (uncredited) 1 episode, 2008
- Chris Conlon
- Â Police Officer (uncredited) 1 episode, 2008
- Tex Allen
- Â Newspaper Copy Editor (uncredited) 1 episode, 2008
- Gavin Peretti
- Â Reporter (uncredited) 1 episode, 2008
- Stefan Niemczyk
- Â Baltimore Police Officer (uncredited) 1 episode, 2008
- Christopher Allison
- Â Drug Dealer #1 (uncredited) 1 episode, 2008
- Rebecca Corbett
- Â Sun Staff Member (uncredited) 1 episode, 2008
- Douglas Nelson
- Â Homicide Detective (uncredited) 1 episode, 2008
- Tony Moore
- Â Attorney (uncredited) 1 episode, 2008
- Greg Coale
- Â Reporter (uncredited) 1 episode, 2008
- Devin Rumer
- Â Corpse (uncredited) 1 episode, 2008
- Gabriel Pearson
- Â Baltimore County Police Liason (uncredited) 1 episode, 2008
- Al Sotto
- Â Deli Delivery Boy (uncredited) 1 episode, 2008
- Tom Gambrill
- Â Retired Detective (uncredited) 1 episode, 2008
- Lace Williams
- Â Homeless Girl (uncredited) 1 episode, 2008
- Ethan Goldsmith
- Â Von (uncredited) 1 episode, 2008
- Katrinka Stringfield
- Â Homicide Secretary (uncredited) 1 episode, 2008
- Al Ghanekar
- Â Photo Editor (uncredited) 1 episode, 2008
- Carlyn Paschall
- Â Court House Staff (uncredited) 1 episode, 2008
- Steve Luxenberg
- Â Sun Staff Member (uncredited) 1 episode, 2008
- Glenn Klavans
- Â Homicide Detective (uncredited) 1 episode, 2008
- Kristine Cornils
- Â Lawyer (uncredited) 1 episode, 2008
- Jefferson Smith
- Â Reporter (uncredited) 1 episode, 2008