| Buck Mountain | |
| Elevation Ft: | 1529 |
| Map: | Missouri |
| Label Position: | left |
| Location: | St. Francois County, Missouri, U.S. |
| Range: | Saint Francois Mountains |
| Coordinates: | 37.6639°N -90.5297°W |
| Topo: | USGS Iron Mountain Lake |
Buck Mountain is a summit in southern St. Francois County in the U.S. state of Missouri. Buck Mountain has an elevation of . The mountain lies east of Missouri Route V about six miles northeast of Pilot Knob and about six miles southwest of Doe Run.[1]
Buck Mountain was so named on account of deer in the area.[2]