Susan Johnson (July 6, 1927 – February 24, 2003), also known as Susan Johnson-Kehn, was an American actress and singer. She appeared primarily in musical theatre, but also appeared in films and television.
Born as Marilyn Jeanne Johnson in Columbus, Ohio, she attended Ohio State University.
Her first marriage to actor Robert Pastene ended in divorce. She was married to her second husband, Lawrence Brown, who left her after a horrible motorcycle accident where Johnson sustained life-threatening injuries to her brain and inner ear. Her third marriage to professional baseball player Chet Kehn lasted from 1965 until his death in 1984.
Johnson arrived in New York in 1947. She appeared on Broadway in Brigadoon (1950; revival), The Most Happy Fella (1956–57), Oh Captain! (1958), Whoop-Up (1958–59), and Donnybrook! (1961). She won the 1956 Theatre World Award for her role in The Most Happy Fella and was nominated for a Tony Award in 1958 for her role in Oh Captain!. She appeared in the films Sister Act (1992) and Sister Act 2: Back in the Habit (1993).
Susan Johnson-Kehn died of emphysema in 2003 in Sacramento, California, aged 75, survived by her daughter Corianne, from her third marriage.