William Beaumont, 2nd Viscount Beaumont (April 1438 – 19 December 1507) was an English nobleman, soldier and landowner who was a leading supporter of the Lancastrian faction during the Wars of the Roses.
He was the son of John Beaumont, 1st Viscount Beaumont and Elizabeth, daughter of Sir William Phelip. He was born at Edenham, Lincolnshire. Although his exact date of birth is not recorded, parish records show the date of his baptism as 23 April 1438.