Horrigan is a surname. Notable people with the surname include:
Alfred F. Horrigan (1914–2005), American academic and university founderBryan Horrigan (born 1962), Australian legal academicDarren Horrigan (born 1983), English footballerJack Horrigan (1925–1973), American sportswriterLiam Horrigan, Irish rugby league playerSam Horrigan (born 1981), American actor