Ruth Gillmore (26 Oktober 1899 – Februarie 1976) was 'n Amerikaanse aktrise en regisseuse. Sy was bekend vir haar rolle in die rolprente The Lost Patrol (1934), Gone with the Wind (1939), Union Pacific (1939), en My Cousin Rachel (1952).
- 1917: A Girl of Glenbeigh
- 1917: Blarney
- 1917: The Byeways of Fate
- 1917: The Irish Girl
- 1917: The Upstart
- 1923: Little Old New York
- 1930: Under Suspicion
- 1931: Don't Bet on Women
- 1931: Merely Mary Ann
- 1933: Paddy the Next Best Thing
- 1934: The Lost Patrol
- 1936: Let's Make a Million
- 1937: Motor Madness
- 1939: Gone with the Wind
- 1939: Union Pacific
- 1939: Two Thoroughbreds
- 1939: Undercover Agent
- 1939: The Zero Hour
- 1946: Abie's Irish Rose
- 1949: Mrs. Mike
- 1952: My Cousin Rachel