William, Willem, Will, or Bill Benson may refer to:

• Bill Benson (rugby league) (1893–1968), Australian rugby league player
• Bill Benson (ice hockey) (1920–2012), Canadian ice hockey centreman
• William Benson (swimmer) (born 1987), New Zealand swimmer
• Will Benson (born 1998), American baseball player

• William Arthur Smith Benson (1854-1924), English designer.
• William Benson (abbot) (died 1549), English Benedictine
• Willem Benson (1521–1574), Flemish Renaissance painter
• William Benson (architect) (1682–1754), British amateur architect and political figure
• William E. Benson (1873–1915), African-American businessman and educator
• William Henry Benson (1803–1870), British amateur malacologist
• William Noel Benson (1885–1957), Australian/New Zealand geologist
• William Ralganal Benson (1862–1937), Native American basket maker
• William S. Benson (1855–1932), American admiral
• William Sol Benson (1877–1945), American esperantist, author of "Benson's Universal Method" for Esperanto's (self-)teaching
• William Thomas Benson (1824–1885), Canadian entrepreneur and politician

• William Bentsen (1930–2020), American Olympic sailor