| Official Name: | Belknap, Montana |
| Settlement Type: | CDP |
| Mapsize: | 250px |
| Pushpin Map: | Montana |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Montana |
| Subdivision Type2: | County |
| Subdivision Name2: | Sanders |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 12.33 |
| Area Land Km2: | 12.33 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 4.76 |
| Area Land Sq Mi: | 4.76 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 161 |
| Population Density Km2: | 13.06 |
| Population Density Sq Mi: | 33.82 |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation Ft: | 3593 |
| Coordinates: | 47.6472°N -115.4222°W |
| Postal Code Type: | ZIP code |
| Area Code: | 406 |
| Blank Name: | FIPS code |
| Blank Info: | 30-05050 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2583789 |
Belknap is a census-designated place (CDP) in Sanders County, Montana United States. The population was 158 at the 2010 census.[2]