| Rapid River | |
| Subdivision Type1: | Country |
| Subdivision Name1: | USA |
| Subdivision Type2: | State |
| Subdivision Name2: | Michigan |
| Subdivision Type3: | Region |
| Subdivision Name3: | Upper Peninsula |
| Subdivision Type4: | County |
| Subdivision Name4: | Ontonagon County |
| Source1 Location: | Bergland Township, Ontonagon County, Michigan |
| Source1 Coordinates: | 46.6142°N -89.715°W |
| Mouth: | Big Iron River |
| Mouth Location: | Bergland Township, Delta County, Michigan |
| Mouth Coordinates: | 46.6322°N -89.6508°W |
The Rapid River is a 4.5adj=midNaNadj=mid[1] river on the Upper Peninsula of the U.S. state of Michigan. It rises in Bergland Township and flows mostly east into the Big Iron River.