Sumar District () is a district (bakhsh) in Qasr-e Shirin County, Kermanshah Province, Iran. At the 2006 census, its population was 247, in 79 families. The District has one city: Sumar. The district was devastated during the Iran-Iraq War. The District has one rural district (dehestan): Sumar Rural District. See also Boli Rural District References Qasr-e Shirin County Districts of Kermanshah Province