Stephen Kosgei Kibet (born 9 November 1986) is a Kenyan long-distance runner who competes in road running competitions from the 10K run to the marathon.
His half marathon personal best of 58:54 minutes ranks him in the top ten of all-time for the distance.
His best of the marathon distance is 2:08:05 hours.
He has won half marathon races in Paris, Udine, and the Hague.
He represented Kenya at the 2012 IAAF World Half Marathon Championships, coming fifth and taking the team gold medal.