Sally Clare Kellerman (born June 2, 1937) is an American actress, activist, author, producer, singer, and voice artist.

Kellerman's acting career spans nearly 60 years. Her role as Major Margaret "Hot Lips" Houlihan in Robert Altman's film M*A*S*H (1970) earned her an Oscar nomination for Best Actress in a Supporting Role. After M*A*S*H, she appeared in a number of the director's projects: the films Brewster McCloud (1970), Welcome to L.A. (1976) (produced by Altman, directed by his protege, Alan Rudolph), The Player (1992) and Prêt-à-Porter (1994), and the short-lived anthology TV series Gun (1997). In addition to her work with Altman, Kellerman has appeared in films such as Last of the Red Hot Lovers (1972), Back to School (1986), plus many television series such as The Twilight Zone (1963), The Outer Limits (1965), Star Trek (1966), Bonanza (1966, 1970) The Minor Accomplishments of Jackie Woodman (2006), 90210 (2008), Chemistry (2011), and Maron (2013).

At age 18, Kellerman signed a recording contract with Verve Records, but her first album (Roll With the Feelin') was not recorded until 1972. A second album, Sally, was released in 2009. Kellerman also contributed songs to the soundtracks for Brewster McCloud (1970), Lost Horizon (1973), Rafferty and the Gold Dust Twins (1975), and Boris and Natasha: The Movie (1992).

She has done commercial voice-over work for Hidden Valley Ranch salad dressing, Mercedes-Benz and Revlon. Kellerman's animation work includes The Mouse and His Child (1977), Sesame Street Presents Follow That Bird (1985), Happily Ever After (1990), Dinosaurs (1992), Unsupervised (2012), and The High Fructose Adventures of Annoying Orange (2013). In April 2013 she released her memoir Read My Lips: Stories of a Hollywood Life, describing her trials and tribulations in the entertainment business.