Allnutt is a surname. Notable people with the surname include:
Albert Allnutt (1892–1963), Australian politician Gillian Allnutt (born 1949), English poet John Allnutt (1773–1863), British wine merchant and art collector Marion Ellen Lea Allnutt (1896–1980), welfare worker Wendy Allnutt (born 1946), English stage and screen actress Yari Allnutt (born 1970), American soccer player
See also Mark Alnutt, director of athletics for the University at Buffalo