| Mount Sidney | |
| Settlement Type: | CDP |
| Pushpin Map: | Virginia |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location within the Commonwealth of Virginia |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Virginia |
| Subdivision Type2: | County |
| Subdivision Name2: | Augusta |
| Unit Pref: | Imperial |
| Population As Of: | 2010 |
| Population Total: | 663 |
| Population Density Km2: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 38.255°N -78.9714°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 24467 |
| Blank Name: | FIPS code |
| Blank Info: | 51-54120 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2584886 |
Mount Sidney is a census-designated place in Augusta County, Virginia. The population as of the 2010 Census was 663.[1]
The Mt. Sidney Historic District and Mt. Sidney School are listed on the National Register of Historic Places.