- Art Carney
- Narrator / Blarney Kilakilarney (voice)
- Peggy Cass
- Faye / Kilakilarny Grandmother (voice)
- Bob McFadden
- Old Mag the Hag / Kilakilarny Grandfather / Belle of Erin Captain / Fairy (voice) (as Robert McFadden)
- Ken Jennings
- Dinty Doyle
- Gerry Matthews
- Lord of the Leprechauns / Kilakilarny Father (voice)
- Christine Mitchell
- Colleen
- Glynis Bieg
- Kilakilarny Girl
- Frankie Moronski
- Kilakilarny Boy
- Aidan Nicolle
- (voice) (uncredited)
