Huntoon is a surname. Notable people with the surname include:
Carolyn Huntoon (born 1940), American scientist and first female Director of the Johnson Space Center David H. Huntoon (born 1951), United States Army general Louis Doremus Huntoon (1869–1937), American mining engineer George William Huntoon IV (born 1992) United States Navy, elevator engineer
See also Huntoon Mountains, a mountain range in Mineral County, Nevada, United States