The Tatoosh Range is a mountain range located in Mount Rainier National Park and the adjacent Tatoosh Wilderness in the state of Washington, in the Pacific Northwest region of the United States. The range runs roughly east-west, beginning with the southeastern Moon Mountain and concluding with the western Rainbow Mountain and Eagle Peak. The range includes 25 prominent named peaks. The peaks average nearly in summit elevation, with the highest, Unicorn Peak, measuring at a height of . Visitors to Mount Rainier can view the range from the Paradise area, and the range is popular with hikers.