William Angus may refer to:

Nobility

• William Douglas, 2nd Earl of Angus (c. 1398–1437), Scottish nobleman and soldier
• William Douglas, 9th Earl of Angus (1533–1591), Scottish nobleman
• William Douglas, 10th Earl of Angus (1552–1611), Scottish nobleman

Others

• William Angus (VC) (1888–1959), Celtic footballer and Victoria Cross recipient
• William "Red" Angus (1849–1922), sheriff during the Johnson County War
• William Angus (Fulham footballer) on List of Fulham F.C. players (1–24 appearances)
• William Angus (Australian politician) (1871–1965), South Australian Lower House politician and agriculturist
• William Angus (engraver) (1752–1821), English engraver from Islington, Middlesex
• William Angus (British politician) (1841–1912), president of the National Liberal Federation in the United Kingdom
• William Angus, escaped prisoner from the St. Michael of Scarborough