Yaw River or Ywa River is a river of Burma, a tributary of the Irrawaddy. It flows into the Irrawaddy on the right (west) just above the town of Seikpyu,[1] at .
The Yaw River forms when the Kyaw River and the Kabyu River flow together at . It flows basically south with a slight trend eastward. It flows past the towns of Ledaing, Anauk Kabyu, and Dawtha with its major tributary, the Sada-on River, entering on the right just below Dawtha.[2]
