The Bongo Massif (), also known as the Tondou Massif, is a mountain range in north-eastern Central African Republic, near the Sudan border. The source of Bahr al-Arab is found within the massif. South of the massif is the Plateau of Ouadda (Coordinates: ).
Summits in the Bongos include:
The lithology is dominated by rugged sandstone.
During November, December, and January, fires of several kilometres size advance down from the Chadian border.