| Mount Rearguard | |
| Elevation Ft: | 12209 |
| Elevation Ref: | [1] |
| Prominence Ft: | 1044 |
| Location: | Carbon County, Montana, U.S. |
| Map: | Montana#USA |
| Relief: | 1 |
| Coordinates: | 45.0483°N -109.5264°W |
| Coordinates Ref: | [2] |
| Topo: | USGS Silver Run Peak |
Mount Rearguard is in the Beartooth Mountains in the U.S. state of Montana.[3] The peak is one of the tallest in the Beartooth Mountains and is in the Absaroka-Beartooth Wilderness in Custer National Forest. A small remnant glacier lies to the east of Mount Rearguard, which sits at the western edge of the Hellroaring Plateau.