Belayneh Dinsamo (born June 28, 1965) is a long-distance track and road running athlete from Ethiopia.
Dinsamo was born in Diramo Afarrara, Sidamo. He held the world record in the marathon for 10 years (1988-1998). This was the third longest span without the record being broken since the event was first organized at the 1896 Olympics. The record was set when he ran 2:06:50 at the 1988 Rotterdam Marathon in the Netherlands. The record was eventually broken by Ronaldo da Costa at the Berlin Marathon in 1998.
- All results regarding marathon, unless stated otherwise
As of 2009, Densamo lives in the area of Cambridge, Massachusetts. He is no longer active in international competition.