Sylvanite is a census-designated place (CDP) in Lincoln County, Montana, United States.

[3] The community is in Kootenai National Forest in northwestern Lincoln County, in the valley of the Yaak River, a south-flowing tributary of the Kootenai River.

Yaak River Road (National Forest Road 92) runs through the valley, leading south 11 miles (18 km) to U.S. Route 2 in the Kootenai valley and northeast (upriver) 17 miles (27 km) to Yaak.

According to the U.S. Census Bureau, the Sylvanite CDP has an area of 5.7 square miles (14.8 km2), all land.

This Lincoln County, Montana state location article is a stub.