William Simpson
William Simpson is the name of the following people:
- William Simpson (artist) (1823–1899), Scottish war correspondent and artist
- William von Simpson (1881–1945), German writer
- William Simpson (football official) (1894–1974), Canadian football official
- William Dunlap Simpson (1823–1890), American politician (South Carolina)
- William Hood Simpson (1888–1980), American general
- William Kelly Simpson (1928–2017), American Egyptologist
