William Denny may refer to: William Denny (MP) (1578–1625), English lawyer and politician William Denny, deputy governor of the Province of Pennsylvania, 1756–1759 William Denny Jr. (born 1930), American politician in the Mississippi House of Representatives William Denny and Brothers, British shipbuilder based in Dumbarton, Scotland William Alexander Denny or Bill Denny (medical researcher) (born 1943), New Zealand chemist William F. Denny (c. 1860–1908), American vaudeville performer and pioneer recording artist William H. P. Denny (1811–1890), American newspaper editor and publisher and politician in Ohio William Joseph Denny or Bill Denny (1872–1946), South Australian politician
See also William D. Denney (1873–1953), American businessman and politician, Governor of Delaware