Penny Singleton, American actress and singer (d. 2003)
Penny Singleton (born Mariana Dorothy McNulty, September 15, 1908 – November 12, 2003) was an American actress and labor leader. During her 60-year career, Singleton appeared as the comic-strip heroine Blondie Bumstead in a series of 28 motion pictures from 1938 until 1950 and the popular Blondie radio program from 1939 until 1950. Singleton also provided the voice of Jane Jetson in the animated series The Jetsons from 1962 to 1963.

Behind the scenes, Singleton served two terms as president of the American Guild of Variety Artists, and testified before a Senate subcommittee in 1962 on the union's treatment of women variety workers.