The Rengao (Reungao, Rongao, Ro-ngao) are a group of about 15,000 (1973) in the Gia Lai-Cong Turn province in the central Vietnam highlands. They are considered by some scholars to be a subgroup of the Bahnar or the Sedang.
Hickey, Gerald C. (1964). "Rengao." In Ethnic Groups of Mainland Southeast Asia, edited by Frank M. LeBar, Gerald C. Hickey, and John K. Musgrave, 145-146. New Haven: HRAF Press.