Birech is a masculine given name of Kenyan origin. The term Birech is derived from the word birechik which means army ants in Kalenjin
- Jairus Kipchoge Birech (born 1992), Kenyan steeplechase runner
- Joseph Kiptoo Birech (born 1984), Kenyan long-distance runner and two-time winner of the Great Scottish Run
![army ants](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d3/Army_ants.jpg/220px-Army_ants.jpg)