| Official Name: | Southside, Hardin County, Tennessee |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Tennessee#USA |
| Pushpin Label: | Southside |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Tennessee |
| Subdivision Type2: | County |
| Subdivision Name2: | Hardin |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 541 |
| Coordinates: | 35.0456°N -88.3517°W |
| Area Code: | 731 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1314314[1] |
Southside is an unincorporated community in Hardin County, Tennessee, United States. Southside is located at the intersection of Tennessee State Route 57 and Tennessee State Route 142 near the Mississippi border.