Mangum is a surname. Notable people with the surname include:
Tanner Mangum, American college football player. Is the starting quarterback for the BYU Cougars.
Dusty Mangum, American football player
Jeff Mangum, American musician and songwriter
John Mangum, American football player
Jonathan Mangum, American actor and comedian
Kris Mangum, American football player
Willie Person Mangum, American politician