McNutt is a surname of either Scottish or Irish origin. It refers to:
PersonsAlexander McNutt (1725–1811), British army officer, colonist, and land agentAlexander McNutt (1802–1848), American politician from Mississippi; governor and state senatorBill McNutt (1925–2006), American fruitcake marketerJohn G. McNutt (contemporary), American professor and authorMarcia McNutt (contemporary), American geophysicist and oceanographerMarvin McNutt (American football), wide receiver for the Carolina PanthersPaul V. McNutt (1891–1955), American politician from Indiana; governor, high commissioner, ambassador, and federal agency administratorTico McNutt (contemporary), American wildlife researcherWilliam Slavens McNutt (1885–1938), American screenwriterLeah Beth McNutt (born 1987), American fundraiserFictional personsBoob McNutt, comic strip by Rube Goldberg 1915–34