Sara Berner (born Lillian Ann Herdan; January 12, 1912 – December 19, 1969) was an American actress. Known for her expertise in dialect and characterization, she began her career as a performer in vaudeville before becoming a voice actress for radio and animated shorts. She starred in her own radio show on NBC, Sara's Private Caper, and was best known as telephone operator Mabel Flapsaddle on The Jack Benny Program.