The Bulaka River is a river in South Papua province, Indonesia.
The river flows in the southern area of Papua with a predominantly tropical monsoon climate (designated as Am in the Köppen-Geiger climate classification). The annual average temperature in the area is 23 ðC. The warmest month is October when the average temperature is around 26 ðC, and the coldest is June, at 20 ðC. The average annual rainfall is 2155 mm. The wettest month is February, with an average of 356 mm of rainfall, and the driest is August, with 16 mm of rainfall.