Katharine Ross (born January 29, 1940 in Los Angeles, California) is an American movie actress whose timeless appearance and graceful, thoughtful manner have led her to be cast in roles of intelligence and daring, often in period settings. Her prominent film roles include:

• The Graduate, as a college student who discovers that her mother and boyfriend share a secret
• Butch Cassidy and the Sundance Kid, as a rural schoolteacher in the 1890s involved with an outlaw
• The Stepford Wives
• The Final Countdown, as the secretary to a U.S. Senator in the 1940s
• Donnie Darko, as a psychiatrist treating a teen with disturbing visions

She has been married to actor Sam Elliott since 1984.

• IMDb filmography