The Teanaway River is a tributary of the Yakima River, in the U.S. state of Washington. It flows into the Yakima River near Cle Elum. The Teanaway River is part of the Columbia River basin, being a tributary of the Yakima River, which is tributary to the Columbia River. The river's name comes from Sahaptin, possibly /tyawnawí-ins/, "drying place".