Crossover Peak is a 2,175-metre (7,136-foot) mountain summit located in the Cascade Mountains of southwestern British Columbia, Canada. It is situated 4.5 km (3 mi) north of the Canada–United States border, 1.6 km (1 mi) southeast of Mount MacFarlane, and 2 km (1 mi) north-northwest of Slesse Mountain, which is its nearest higher peak. Precipitation runoff from the peak drains into Slesse Creek and Nesakwatch Creek, both tributaries of the Chilliwack River. The mountain's name was submitted by Glenn Woodsworth of the Alpine Club of Canada based on the popular cross-over hike from the Pierce Lake trail to the Slesse trail on opposite sides of the peak. The name was officially adopted on May 21, 1981, by the Geographical Names Board of Canada.