Frederick Hallen (1 January 1859 – 28 February 1920) was a Canadian-born vaudeville entertainer who found popularity on the North American stage.

[4][5] Hallen and Fuller were known for their short comedic plays and skits performed in vaudeville houses across North America for nearly a quarter century.

[6] In 1900, Hallen starred in the Broadway musical Aunt Hannah at the Bijou Theatre; a work created by composer A. Baldwin Sloane, lyricist Clay M. Greene, and writer Matthew J.

[1] After producer Edward Franklin Albee learned that Mollie Fuller was nearly blind and living in poverty in Chicago, he brought her back to New York where he asked writer Blanche Merrill to write a piece for her to perform in.

[10] The highlight of her career came in 1895 when Hallen bought the rights to the play The Twentieth Century Girl and cast her in the title role.