Gilman is an unincorporated community and census-designated place (CDP) in Lewis and Clark County, Montana, United States.

It is near the northern border of the county, on the east side of U.S. Route 287.

Montana Highway 21 forms the southern edge of Gilman and leads east 21 miles (34 km) to Simms.

Elk Creek, a tributary of the Sun River, flows eastward through the southern part of the CDP.

This Lewis and Clark County, Montana state location article is a stub.