The Dosewallips River is a river situated on the Olympic Peninsula in the U.S. state of Washington. It rises near Mount Anderson in the Olympic Mountains within Olympic National Park and drains to Hood Canal and thence to the Pacific Ocean. The river originates in two Forks, which join about five miles from the headwaters. The National Park Service maintains trails and campsites along both forks, including one at the fork itself. The road leading to the trailhead was washed out in January 2002, and the ranger station near the trailhead has been abandoned.