William Coates may refer to:
- Sir William Coates, 1st Baronet (1866–1932), Irish stockbroker, Lord Mayor of Belfast, 1920–1923, 1929–1931
- William Coates (businessman) (1882–1963), British civil servant and businessman
- William Coates (longevity claimant) (1911–2004), American alleged centenarian
- William Peyton Coates (1883–1963), Irish labour activist and communist
- William Coates (technician) (1919–1993), science communicator, lecturer and technician
- William Paul Coates (born 1946), African-American publisher and father of Ta-Nehisi Coates
See also
edit