Sue Ane Langdon (born 8 March 1936) is an American actress. She has appeared in dozens of television series and had featured roles in films such as A Guide for the Married Man and The Cheyenne Social Club, both directed by Gene Kelly, as well as The Rounders opposite Henry Fonda and Glenn Ford and two Elvis Presley movies, Roustabout and Frankie and Johnny.

She began her performing career singing at Radio City Music Hall and acting in stage productions. In the mid-1960s, she appeared in the Broadway musical The Apple Tree, which starred Alan Alda.

Her co-starring role on the television series Arnie won her a Golden Globe Award for Best Supporting Actress-Television.

In 1976, she appeared in Hello Dolly at The Little Theatre on the Square. In 1978, she appeared in Chicago for Kenley Players in Columbus, Ohio. She was featured mainly in comedies, with an occasional dramatic film.