Mount Claywood is a 6,836-foot (2,084-metre) mountain summit located within Olympic National Park in Jefferson County of Washington state.

[4] It is situated at the head of Lost River, and 15 mi (24 km) east of Mount Olympus.

This mountain was originally named "Mount Clay Wood" in 1885 by Lieutenant Joseph P. O'Neil to honor his superior, Colonel Henry Clay Wood (1832–1918), Assistant Adjutant General, Department of the Columbia, who signed the orders for O'Neil's 1885 exploration of the Olympic Mountains.

As fronts approach, they are forced upward by the peaks (orographic lift), causing them to drop their moisture in the form of rain or snow.

[8] The mountains were sculpted during the Pleistocene era by erosion and glaciers advancing and retreating multiple times.