William Humphrey
William Humphrey is the name of the following people:
- William Humphrey (artist) (1740? –1810?) English printmaker and publisher
- William Humphrey (writer) (1924–1997), American writer
- William Humphrey (politician) (* 1967), Northern Irish politician
- William Alvara Humphrey (1876–1945), English geologist and mineralogist
- William E. Humphrey (1862–1934), American politician
- William J. Humphrey (1875? –1942), American actor and director
