Lygon is a surname. Notable people with the surname include:
Henry Lygon, 4th Earl Beauchamp (1784–1863), British soldier and politicianHenry Lygon, 5th Earl Beauchamp (1829–1866), British politicianFrederick Lygon, 6th Earl Beauchamp (1830–1891), British Conservative politicianWilliam Lygon, 7th Earl Beauchamp (1872–1938), British politician, leader of the Liberal Party, and Governor of New South WalesHugh Patrick Lygon (1904–1936), son of William LygonWilliam Lygon, 8th Earl Beauchamp (1903–1979), politician