Decha is a district in the South West Region of Ethiopia. The name Decha comes from one of the provinces in the former Kingdom of Kaffa, which had the approximately same boundaries. Part of the Keffa Zone, Decha is bordered on the south by the Omo River which separates it from the Debub Omo Zone, on the west by the Bench Maji Zone, on the northwest by Chena, on the north by Ginbo, on the northeast by Menjiwo, on the west by Telo and Cheta, and on the southeast by the Denchya River which separates it from the Konta special district. The major town in Decha is Chiri.