The Roman Catholic Diocese of Byumba ( Latin: Dioecesis Byumbanus) is an ecclesiastical territory or diocese of the Roman Catholic Church in Rwanda. It was erected on November 5, 1981, by Pope John Paul II. The diocese is a suffragan of the Archdiocese of Kigali.
1°34′24″S 30°03′21″E / 1.5733°S 30.0557°E