Selamago is a woreda in the South Ethiopia Regional State. Part of the South Omo Zone, Selamago is bordered on the south by Nyangatom, on the west and north by the Omo River which separates it from the Bench Maji, Keffa and Konta, on the northeast by the Gamo Gofa, on the east by the Basketo and Bako Gazer, and on the southeast by the Usno River which separates it from Bena Tsemay; the Mago River defines part of the boundary with Bako Gazer. The administrative center of Selamago is Hana.