Horace McMahon (17 Mei 1906 – 17 Augustus 1971) was 'n Amerikaanse akteur. Hy was bekend vir sy rolle in die rolprente Detective Story (1951), Abbott and Costello Go to Mars (1953), en The Swinger (1966), en in die televisiereeks Naked City (1958).
- 1937: The Wrong Road
- 1938: 10th Ave Kid
- 1939: I Was a Convict
- 1939: Pride of the Navy
- 1941: The Stork Pays Off
- 1942: Jail House Blues
- 1951: Detective Story
- 1953: Abbott and Costello Go to Mars
- 1953: Man in the Dark
- 1966: The Swinger
- 1952: The Ford Television Theatre
- 1955: Undercurrent
- 1956: Joe & Mabel
- 1958: Naked City
- 1964: Mr. Broadway
