Horrigan is a surname. Notable people with the surname include:
Alfred F. Horrigan (1914–2005), American academic and university founder Bryan Horrigan (born 1962), Australian legal academic Darren Horrigan (born 1983), English footballer Jack Horrigan (sportswriter) (1925–1973), American sportswriter Jack Horrigan (rugby league) Liam Horrigan, Irish rugby league player
See also 6176 Horrigan, a main-belt asteroid