William Harris
William Harris is the name of the following people:
- William Harris (Sandpiper) (1813 – after 1888), British sandpiper
- William Harris (botanist) (1860–1920) Irish botanist
- William Harris (swimmer) (1897–1961), American swimmer
- William Harris (musician) , American blues musician
- William A. Harris (Politician, 1805) (1805–1864) American politician (Virginia)
- William A. Harris (Politician, 1841) (1841–1909) American politician (Kansas)
- William Bevan Harris (1887–1957), Australian actor and comedian, see Billy Bevan
- William Cornwallis Harris (1807–1848), major in the British East India Company, hunter and traveler to Africa
- William J. Harris (1868–1932), American politician
- William P. Harris Jr. (1897–1972), American banker and mammalogue
- William Snow Harris (1791–1867), British physician and inventor
- William Torrey Harris (1835–1909), American school politician and philosopher
- William Wadé Harris (1850? –1929), Liberian evangelist and prophet
