Moncrief is a surname. Notable people with the surname include:
Brianne Moncrief (born 1983), American actress
Donte Moncrief (born 1993), American football player
James Moncrief (1741–1793), British military engineer
Mike Moncrief, American politician in Texas
Raleigh Moncrief, American musician
Sidney Moncrief (born 1957), American basketball player
Vincent Moncrief, American mathematician and physicist
William Moncrief (born 1920), American businessman
Zac Moncrief (born 1971), American animator