William Willis

William Willis may refer to:

• William Willis (mayor) (1794–1870), American politician, mayor of Portland, Maine, 1857
• William Willis Garth (1828–1912), American politician
• William Willis (physician) (1837–1894), British physician
• William Willis (politician) (1835–1911), British politician, MP for Colchester 1880–1885
• William Willis (inventor) (1841–1923), British inventor
• William Jarvis Willis (1840–1884), New Zealand politician
• William Nicholas Willis (1858–1922), Australian politician
• William Willis (sailor) (1893–1968), rafter and adventurer
• William Willis (artist) (born 1943), American artist