Jemima Jelagat Sumgong (born 21 December 1984) is a Kenyan long-distance runner who competes in marathon races.
She has won the London, Rotterdam and Las Vegas Marathons, and has finished runner-up at the Boston, Chicago and New York City Marathons.
She has a personal best of 2:20:48 hours for the distance.
In the 2016 Olympic Games, at age 31, she won the marathon in warm conditions with a time of 2:24:04 hours, becoming the first female winner from Kenya since women's marathon was introduced to the Olympics in 1984.