The Bilate is a river of south-central Ethiopia. It rises on the southwestern slopes of Mount Gurage near , flowing south along the western side of the Great Rift Valley, to empty into Lake Abaya at . It is the longest river flowing into Lake Abaya and also the one with the highest discharge. The river is not navigable and it has no notable tributaries. Along the middle of its course the Bilate flows past the Bilate River volcanic field.