Chepkoech is a Kenyan surname. Notable people with the surname include:

Beatrice Chepkoech (born 1991), Kenyan long-distance runner Caroline Chepkoech Kipkirui (born 1994), Kenyan-Kazakhstani long-distance runner Jackline Chepkoech (born 2003), Kenyan steeplechase runner Joyce Chepkoech Korir, Kenyan politician