Hagan is a surname. Notable people with the surname include:
Ashton Hagans (born 1999), American basketball player John Hagans (1838–1900), American politician, lawyer, and judge Lauren Hagans (born 1986), American long-distance runner Marques Hagans (born 1982), American football coach and former player Matt Hagans (born 1956), American stock car racing driver
See also Hagans Homestead, historic building in West Virginia, U.S. Hagan (surname), another surname Hagon, another surname Hagin, another surname