Sex Peak is a summit in Sanders County, Montana, in the United States. It is located within the Kootenai National Forest. It has an elevation of
A conversation between a park official and a forester about sexual intercourse supposedly caused the name Sex Peak to be selected.
Atop Sex Peak stands the Sex Peak Lookout Station, a decommissioned fire lookout tower which is now available for rental for overnight recreational visits from the United States Forest Service.