Japhet Kipyegon Korir (born 30 June 1993) is a Kenyan long-distance runner who competes in cross country running competitions and the 5000 metres.

[3] He failed to make the team the following year but was chosen for the 2011 African Cross Country Championships, where he became the competition's first male junior champion.

[5] He began the 2012 season with a 5000 m personal best of 13:11.44 minutes at the PSD Bank Meeting (moving up to fourth on the all-time junior indoor lists) and had a win at the Eurocross cross country race in Luxembourg.

[7] He failed to make the Kenyan team for the 2012 World Junior Championships in Athletics in June, having been hurt by a competitor's track spikes, and missed the rest of the season due to an Achilles tendon injury.

Korir also moved up to compete in the half marathon, finishing in 7th place at the CPC Loop Den Haag in a time of 1:02:41 hours.