Montana Highway 64

Highway 64 (MT 64) is a 9.039 mi state highway in Madison and Gallatin counties in Montana, United States. that connects the Mountain Village area of Big Sky Resort to an intersection with U.S. Route 191 (US 191) in Gallatin Canyon, about 41 mi south of Bozeman. Meadow Village, the primary residential area of Big Sky, is approximately 2 mi west of the US 191 intersection.

The road was constructed in the 1970s as part of the development of the Big Sky resort complex.