Blight is an English surname. Notable people with this surname include:
People with the surname David W. Blight (born 1949), American historian Digby Blight (born 1931), former Director of Premier and Cabinet, Western Australia Ellen Blight (1833/1834–1850), English lion-tamer killed by a tiger John Blight (1913–1995), Australian poet of Cornish ancestry John Thomas Blight (1835–1911), Cornish archaeological artist Malcolm Blight (born 1950), former Australian rules footballer Rick Blight (1955–2005), Canadian hockey player Vicki Blight (born 1981), British radio DJ
Fictional characters Dr. Blight, a villain in the animated series Captain Planet and the Planeteers Amity Blight, character in The Owl House