Patsy Ruth Miller (born Ruth Mae Miller; January 17, 1904 – July 16, 1995) was an American film actress.

After being discovered by actress Alla Nazimova at a Hollywood party, Miller got her first break with a small role in Camille, which starred Rudolph Valentino. Her roles gradually improved, and she was chosen as a WAMPAS Baby Star in 1922. In 1923, she was acclaimed for her performance as Esmeralda in The Hunchback of Notre Dame opposite Lon Chaney.

In the later part of the decade Miller appeared chiefly in light romantic comedies, opposite such actors as Clive Brook and Edward Everett Horton. Among her film credits in the late 1920s are Broken Hearts of Hollywood (1926), A Hero for a Night (1927), Hot Heels (1928), and The Aviator (1929). Miller retired from films in 1931. She made a cameo appearance in the 1951 film Quebec, and came out of retirement to do the film Mother in 1978.

Miller later achieved recognition as a writer. She won three O. Henry Awards for her short stories, wrote a novel, radio scripts, and plays. In 1988, BearManor Media published her autobiography My Hollywood: When Both of Us Were Young.