Jama Williamson (born March 12, 1974) is an American actress. She was active in New York City theater throughout the early 2000s, during which she appeared in such shows as Avery Crozier's Eat the Runt, Hunt Holman's Spanish Girl, A. R. Gurney's Sylvia and Simon Mendes da Costa's Losing Louis.
For Nickelodeon, she played Principal Mullins in School of Rock and guest starred in Nickelodeon's Not So Valentine's Special.