Mount Fitzhenry, Mountain summit in Clallam County, Washington, United States.

Mount Fitzhenry is a 6,050-foot (1,840-metre) summit in the Bailey Range of the Olympic Mountains, inside Olympic National Park in Clallam County, Washington. Its rounded peak rises above snow-covered upper slopes broken by dark grey rock ridges, with dense evergreen forest below. It stands at the head of Fitzhenry Creek, 1.57 mi (2.53 km) north of Mount Fairchild.

Mount Fitzhenry and nearby Fitzhenry Creek are named after Edward Allen Fitzhenry, who served as Clallam County surveyor from 1892 to 1900 and was appointed Washington Surveyor General by President Woodrow Wilson in 1913.

The mountain and Fitzhenry Creek carry the name of Edward Allen Fitzhenry, Clallam County surveyor from 1892 to 1900, appointed Washington Surveyor General by President Woodrow Wilson in 1913 and later Deputy State Land Commissioner. The summit stands at the head of the creek that bears the same name.

Mount Fitzhenry is best viewed and climbed from July through September, when high-pressure systems over the Pacific usually keep the Olympic sky clear. In winter the summit is typically cloud-covered, and weather fronts arriving from the Pacific drop heavy rain or snow as they are forced up over the range. The peak stands 1.57 mi (2.53 km) north of Mount Fairchild, its nearest higher neighbour.

Mount Fitzhenry stands at the head of Fitzhenry Creek, and both the peak and the creek carry the name of Edward Allen Fitzhenry, Clallam County surveyor from 1892 to 1900. President Woodrow Wilson appointed him Washington Surveyor General in 1913, and he later served as Deputy State Land Commissioner.