Bethwell Birgen (born 6 August 1988) is a Kenyan middle-distance runner. His personal best of 3:30.77 minutes for the 1500 metres ranks him among the top fifty ever for the event, while his indoor best of 3:34.65 minutes is among the top twenty. He represented Kenya in the 1500 m at the 2012 IAAF World Indoor Championships and the 2013 World Championships in Athletics, but did not make the final on either occasion.