| Lower South Bay | |
| Settlement Type: | hamlet |
| Pushpin Map: | New York |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New York |
| Subdivision Type2: | County |
| Subdivision Name2: | Oneida |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 43.2°N -76.0631°W |
| Postal Code Type: | Zip code |
| Area Code: | 315 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 956111 |
Lower South Bay, commonly called South Bay, is a hamlet on the southwest corner of Oneida Lake, Oneida County, New York, United States. It is opposite North Bay, and is surrounded by many islands to the west, north and east, including Geersbeck Island, Hall Island, Glosky Island, Schroeppel Island, Denmans Island and Long Island (not to be confused with Long Island, New York City). Lower South Bay also lies near the town of Cicero, approximately two miles west.