Katharine Juliet Ross (born January 29, 1940) is an American film and stage actress. She starred in three of the most popular films of the 1960s and 1970s: as Elaine Robinson in The Graduate (1967), for which she received an Academy Award nomination for Best Supporting Actress; as Etta Place in Butch Cassidy and the Sundance Kid (1969), for which she won a BAFTA Award for Best Actress; and The Stepford Wives (1975). May 1975 she starred (as Laurie) in Red Headed Stranger with Willie Nelson and Morgan Fairchild. She won a Golden Globe for Voyage of the Damned (1976).
Ross was born in Hollywood, California, on January 29, 1940 (though many sources cite 1942 or 1943) when her father, Dudley Ross, was in the Navy. He had also worked for the Associated Press. Her family later settled in Walnut Creek, California, east of San Francisco, and she graduated from Las Lomas High School in 1957. Ross was a keen horse rider in her youth and was friends with Casey Tibbs, a rodeo rider.