Shem Kororia (born 25 September 1972) is a former Kenyan long-distance runner who specialized in the 5000 metres and half marathon. He represented his native country at the 1996 Summer Olympics in Atlanta, United States. Kororia was the third man ever to run the half marathon within an hour, when he won the world half marathon title on October 1997 in Košice, Slovakia, clocking 59:56 minutes.