The Kawa River (Wae or Wai Kawa) is a river of Seram Island, Maluku province, Indonesia, about 2500 km northeast of the capital Jakarta.

[1] It flows in an easterly direction through the southern area of Manusela National Park, with many "small, fast-flowing rivers running through".

[2] The river flows in the southern central region of Seram island with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).

The warmest month is December, when the average temperature is around 24 °C, and the coldest is August, at 20 °C.

The wettest month is July, with an average of 494 mm rainfall, and the driest is October, with 89 mm rainfall.