William R. Dunn (May 23, 1888 – March 24, 1946) was an American actor on film and stage and in vaudeville.

Dunn was born in Astoria, Long Island, the son of William R. Dunn, a ferry captain, and Martha Wentz.

[2] Dunn debuted as an actor in 1900 with the Corse Payton Stock Company in Brooklyn.

[3] He appeared along Mary Maurice, Earle Williams, James Morrison, Robert Gaillard, Tefft Johnson, Ralph Ince and Wallace Reid in The Seventh Son (1912), directed by Hal Reid;[4] and along Evelyn Nesbitt, Russell Thaw, Henry Clive, Alphonse Ethier and Jane Jennings in I Want to Forget (1918), directed by James Kirkwood.

[5] Dunn was married to Sabel Johnson, who performed in, and wrote for, vaudeville sketches.