William Chirchir (born 6 February 1979, in Bomet) is a Kenyan runner (Kipsigis tribe) who specializes in the 1500 metres. He is a former holder of the world junior record over the distance with 3:33.24 minutes from 1998.
| Representing | |||||
|---|---|---|---|---|---|
| 1998 | Annecy, France | 1st | 800 m | 1:47.23 | |
| 1999 | Grand Prix Final | Munich, Germany | 5th | 800 m | 1:44.75 |
| 2001 | World Championships | Edmonton, Canada | 4th | 1500 m | 3:31.91 |
| Grand Prix Final | Melbourne, Australia | 3rd | 1500 m | 3:34.06 | |
| 2002 | Commonwealth Games | Manchester, United Kingdom | 2nd | 1500 m | 3:37.70 |
| Grand Prix Final | Paris, France | 9th | 1500 m | 3:39.11 | |