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