| Official Name: | South Byron, Wisconsin |
| Pushpin Map: | Wisconsin#USA |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1030 |
| Coordinates: | 43.6389°N -88.4864°W |
| Area Code: | 920 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1574425 |
South Byron is an unincorporated community located, in the town of Byron, in Fond du Lac County, Wisconsin, United States. South Byron is 1.5miles north of Brownsville.