See also: Frontier (disambiguation).
| Official Name: | Frontier |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Minnesota#USA |
| Pushpin Label: | Frontier |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Minnesota |
| Subdivision Type2: | County |
| Subdivision Name2: | Koochiching |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1076 |
| Coordinates: | 48.6564°N -94.2567°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 56623 |
| Area Code: | 218 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 654716 |
Frontier is an unincorporated community in Koochiching County, Minnesota, United States, located along the Rainy River.
The community is located between International Falls and Baudette on State Highway 11 (MN 11). Frontier is located within Northwest Koochiching Unorganized Territory.
The Rainy River and Whitefish Creek meet at Frontier.
Frontier is located 18 miles east of Baudette and 50 miles west of International Falls. Frontier is seven miles west of Birchdale.
Frontier is located within ZIP code 56623, based in Baudette.