Mary Loos (6 Mei 1910 – 11 Oktober 2004) was 'n Amerikaanse skryfster, vervaardiger, en aktrise. Sy was bekend vir haar rolle in die rolprente A Ticket to Tomahawk (1950), The French Line (1953), en Gentlemen Marry Brunettes (1955), en in die televisiereeks Yancy Derringer (1958).
- 1946: Rendezvous with Annie
- 1947: Calendar Girl
- 1947: Driftwood
- 1947: Hit Parade of 1947
- 1948: The Dude Goes West
- 1948: The Inside Story
- 1949: Father Was a Fullback
- 1949: Mother Is a Freshman
- 1949: Mr. Belvedere Goes to College
- 1950: A Ticket to Tomahawk
- 1950: I'll Get By
- 1950: When Willie Comes Marching Home
- 1951: Meet Me After the Show
- 1953: The French Line
- 1953: Let's Do It Again
- 1954: Woman's World
- 1955: Gentlemen Marry Brunettes
- 1956: Over-Exposed
