Marys Peak, Mountain summit in Oregon Coast Range, US

Marys Peak is a mountain in Benton County, Oregon, just southwest of Philomath, and the highest peak in the Oregon Coast Range. Its upper slopes are dominated by noble fir, while Douglas fir and western hemlock cover the lower slopes. A grassland at the summit holds outcrops of gabbro rock known as rock gardens, the largest covering four to five acres on a southern slope near the top.

The Kalapuya, who call the peak chatímanwi, climbed it to escape a flood and used it for hunting, fishing and gathering beargrass, hazel and cedar. In 1856 the U.S. government forcibly removed the southern Kalapuya bands from the area. Settlers later grazed livestock, and a community named Peak on the northwest slope was abandoned after its post office closed in 1917.

The Kalapuya call the peak chatímanwi, 'place of spiritual power', and their oral history tells of ancestors climbing it to escape a great flood. Grand Ronde council member Brenda Tuomi described it as a protector and provider where people come to pray and heal. In 2019 ten creeks on the mountain received Kalapuya, Wusi'n and Yaqo'n names, and Corvallis installed the signs in 2025.

The summit road stays open through winter, but it is not maintained then: a lifted 4x4 or chains on all four wheels are needed to drive up. The Forest Service kept the gates open during the 2010–2011 winter to ease travel to the summit. On clear days the Pacific Ocean shows to the west and the Willamette Valley towns and Cascade Range to the east.

In 2015, Oregon State University scientists identified an ice crawler living on Marys Peak as a species new to science, Grylloblatta chintimini, named after the Kalapuya word for the mountain. The same upper slopes hold a 924-acre Scenic Botanical Special Interest Area designated in 1989, where gabbro rock gardens on thin, dry soil support Cascade desertparsley, harsh paintbrush, Olympic onion and spreading phlox.