Mary Claire Fuller (October 5, 1888 – December 9, 1973) was an American actress active in both stage and silent films. She also was a screenwriter and had several films produced. An early major star, by 1917 she could no longer gain roles in film or on stage. A later effort to revive her career in Hollywood failed in the 1920s after talkies began to dominate film. After suffering a nervous breakdown, she was admitted to St. Elizabeths Hospital in Washington, DC in 1947 and lived there until her death. ()