Coldwater Peak is a mountain summit located in Mount St. Helens National Volcanic Monument, in the Gifford Pinchot National Forest, in Skamania County of southwest Washington state. It is situated in the Cascade Range, northwest of Spirit Lake, and east of Coldwater Lake. Its nearest higher neighbor is Mount Margaret, to the northeast, and Mount St. Helens rises to the south. Precipitation runoff from Coldwater Peak drains into Coldwater Creek, a tributary of the North Fork Toutle River. The mountain takes its name from this creek, and was officially adopted in 1983 by the U.S. Board on Geographic Names. A trail provides access to the summit, the site of the former Coldwater Lookout from 1935 to 1968, and now is a site for research instruments.