| Official Name: | Pinnacle, Montana |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Montana#USA |
| Pushpin Label: | Pinnacle |
| Coordinates: | 48.355°N -113.6494°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Montana |
| Subdivision Type2: | County |
| Subdivision Name2: | Flathead |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.60 |
| Area Land Sq Mi: | 0.57 |
| Area Water Sq Mi: | 0.03 |
| Area Total Km2: | 1.55 |
| Area Land Km2: | 1.47 |
| Area Water Km2: | 0.08 |
| Population As Of: | 2020 |
| Population Density Km2: | 30.70 |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation Ft: | 3688 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 59916 (Essex) |
| Area Code: | 406 |
| Blank Name: | FIPS code |
| Blank Info: | 30-57775 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2806615 |
| Population Total: | 45 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 79.51 |
Pinnacle is an unincorporated community and census-designated place (CDP) in Flathead County, Montana, United States. It is in the eastern part of the county, along U.S. Route 2 in the valley of the Middle Fork Flathead River. It is 6miles north of Essex and southeast of West Glacier. The community is bordered to the east, across the Middle Fork, by Glacier National Park, and to the west by Flathead National Forest.
Pinnacle was first listed as a CDP prior to the 2020 census.