| Official Name: | Grantsdale, Montana |
| Pushpin Map: | Montana#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Montana |
| Subdivision Type2: | County |
| Subdivision Name2: | Ravalli |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation Ft: | 3675 |
| Coordinates: | 46.2036°N -114.1417°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 59835 |
| Area Code: | 406 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 784190 |
Grantsdale is an unincorporated community in Ravalli County, Montana, United States. Grantsdale is located near U.S. Route 93 and Montana Highway 38, south of Hamilton. The community had a post office until October 29, 1988; it retains its own ZIP code, 59835.[1] [2]
Initially called Skalkaho Creek, the town became Grantsdale in about 1888 after H. H. Grant, the town's founder.[3]