William Beaumont (1785–1853) was a U.S. Army surgeon.

William Beaumont may also refer to:

• Bill Beaumont (born 1952), English rugby player
• William Beaumont, 2nd Viscount Beaumont (1438–1507), English soldier and landowner
• William Spencer Beaumont (1848–1926), British army officer and a member of the London County Council
• William Comyns Beaumont (1873–1956), British journalist, author, and lecturer
• William Beaumont (1427–1453), lord of the manor of Shirwell in North Devon
• William Rawlins Beaumont (1803–1875), Canadian surgeon
• Billy Beaumont (1883–1911), English footballer

• William de Beaumont, 3rd Earl of Warwick (1140–1184)
• William Beaumont Army Medical Center a U.S. Army medical center in El Paso, Texas, United States
• William Beaumont Health System, a not-for-profit operator of 3 hospitals in U.S. state of Michigan

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