Debub Bench is one of the woredas in the South West Ethiopia Peoples' Region of Ethiopia. It is named for the Bench people. Part of the Bench Maji Zone, Debub Bench is bordered on the south by Meinit Shasha, on the west by Guraferda, on the north by Sheko, on the northeast by Semien Bench, on the east by She Bench, and on the southeast by Meinit Goldiya. Town of Mizan Aman is surrounded by Debub Bench. Debub Bench is part of former Bench woreda.
Rivers in Debub Bench include the Akobo, which has its source in this woreda.