Dieudonné Disi (born 24 November 1980 in Ntyazo, Butare) is a Rwandan long-distance and cross country runner.

In 2009 he competed in the marathon at the 2009 World Championships in Athletics, but pulled out at the 28 km mark due to an injury. He rebounded after this with a series of victories in October, winning the 10,000 metres race at the Jeux de la Francophonie, the 20 Kilometres de Paris two weeks later, then equalling the course record at the Reims Half Marathon.^[1]