| Iron Mountain | |
| Elevation Ft: | 5446 |
| Elevation Ref: | [1] |
| Map: | USA South Dakota |
| Label Position: | right |
| Location: | Pennington County, South Dakota, U.S. |
| Range: | Black Hills |
| Coordinates: | 43.8586°N -103.4336°W |
| Topo: | USGS Iron Mountain |
Iron Mountain is a peak in the Black Hills of South Dakota, notable for the fact that U.S. Route 16A was purposely built directly over its summit to provide scenic views of Mount Rushmore National Memorial.