William Wightman

William Wightman may refer to:


 * William Wightman (English MP 1361-1391), MP for Huntingdon
 * William Wightman (died 1580), MP
 * William Wightman (judge) (1784–1863), British judge
 * William Wightman (Canadian politician) (1929–2017)
 * William May Wightman (1808–1882), American educator and clergyman