Joseph Kosgei (born 25 August 1974) is a Kenyan middle-distance runner who specializes in the 3000 metres. He was a team gold medallist at the 2002 IAAF World Cross Country Championships.
| 2002 | Dublin, Ireland | 8th | Short race | |||
| bgcolor=gold | 1st | Team competition | ||||
| 2004 | Monte Carlo, Monaco | 8th | 3000 m |