The Coweeman River is a tributary of the Cowlitz River, in the South West corner of the U.S. state of Washington. Its name comes from the Cowlitz word ko-wee-na, meaning "short one", referring to a short Indian who once lived along the river.

Course

The Coweeman River originates in Coweeman Lake and flows west for 36 mi to join the Cowlitz River near the confluence of the Cowlitz and Columbia River at Kelso. Just below the mouth of its first named tributary, Butler Creek, the river drops over Washboard Falls.