Gumuz (also spelled Gumaz) is a dialect cluster spoken along the border of Ethiopia and Sudan. It has been tentatively classified within the Nilo-Saharan family. Most Ethiopian speakers live in Kamashi Zone and Metekel Zone of the Benishangul-Gumuz Region, although a group of 1,000 reportedly live outside the town of Welkite (Unseth 1989). The Sudanese speakers live in the area east of Er Roseires, around Famaka and Fazoglo on the Blue Nile, extending north along the border.