"Nightmare Theatre" was a hosted horror movie show aired by WITI-TV Channel 6, Milwaukee, Wisconsin between 1969 - 1977, with host Jack DuBlon as "Dr. Cadavarino".

The original show was called "The Late Show" which was aired from 10 October 1964. From 17 July 1965 the show was re-titled "The Late, Late Show". From 8 March 1969 it was again re-titled to Nightmare Theatre". It was hosted by Jack DuBlon as "Dr. Cadavarino". There followed a one-off special "Farewell Nightmare Theatre" on 29 October 1977 and a further special "Dr. Cadaverino's Halloween Special" on 31 October 1980.—The Professor