Aries is a mountain summit located within Olympic National Park in Jefferson County of Washington state. Its neighbors include Mount Olympus, to the west, and Mount Mathias to the northwest. Aries is wedged between the Hoh Glacier and the Humes Glacier, and immediately northeast of Blizzard Pass. Precipitation runoff from the mountain drains into headwaters of the Queets and Hoh Rivers. This mountain was named by glaciologists Richard Hubley and Edward LaChapelle in 1955, in preparation for the International Geophysical Year. It is named for Aries in keeping with the Greek and Roman mythology naming theme surrounding Mount Olympus.