Peggy Knudsen was an American character actress.
Born Margaret Ann Knudsen in Duluth, Minnesota, she made her Broadway debut in My Sister Eileen. She began her film career in 1946 in A Stolen Life opposite Bette Davis. That same year, she appeared in bit parts in several films including The Big Sleep and Humoresque with Joan Crawford.
Despite appearing in big budget features with established stars, Knudsen's career never took off and she was relegated to smaller roles in B movies. Her last film role was in the 1957 film Istanbul with Errol Flynn.
In the 1950s and '60s, Knudsen appeared in guest starring roles on several television shows including Alfred Hitchcock Presents, The Millionaire, Perry Mason, and Pete and Gladys. After appearing in an episode of The Adventures of Ozzie & Harriet in 1965, Knudsen retired from acting.