Neligan is a surname. Notable people with the surname include:
David Neligan (1899–1983), "The Spy in the Castle" David M Neligan (1935–2025), Irish diplomat Dorinda Neligan (1833–1914), Irish-born English headmistress and suffragette Gwendoline Neligan (1905–1972), British fencer Moore Richard Neligan (1863–1922), Anglican Bishop Maurice Neligan (1937–2010), Irish heart surgeon, activist, newspaper columnist and media commentator Maurice Wilder-Neligan (1886–1923), born Maurice Neligan, British-born Australian soldier
Fictional characters John Hopley Neligan, a character in The Adventure of Black Peter, a Sherlock Holmes story by Sir Arthur Conan Doyle