John Korir is the name of:
John Cheruiyot Korir (born 1981), Kenyan runner, mostly cross-country and track races John Korir Kipsang (born 1975), Kenyan runner, mostly competes at road races in the US John Korir (runner, born 1996), Kenyan runner, winner of the Chicago Marathon (2024) and Boston Marathon (2025, 2026)