- Country: USA
- Genres: Drama
- Release: 1949-09-22
- Director: N/A
- Writers: N/A
- Language: English
- Stars: Mildred Natwick , Roberta Haynes , Harry Bellaver (1905–1993) , Jean Muir , Elliott Sullivan , Margaret Bannerman , Nicholas Saunders , Mary Malone , Lou Polan
- Runtime: 30 min
- Awards: N/A
- AKA: The Boris Karloff Mystery Playhouse (United States of America) , Starring Boris Karloff , The Boris Karloff Mystery Playhouse
- Plot: The Boris Karloff Mystery Playhouse is a 30-minute US television mystery anthology series, probably produced live. Boris Karloff hosted twelve episodes that aired from September to December 1949. All but five titles appear to be lost.
- IMDB:tt0041054
The Boris Karloff Mystery Playhouse Cast
Mildred Natwick
Roberta Haynes
Harry Bellaver
(1905–1993)
Jean Muir
Elliott Sullivan
Margaret Bannerman
Mme. Louvere
Nicholas Saunders
Mary Malone
Lou Polan