Swansea Bay may refer to the following places in Wales:
- Swansea Bay, on the north of the Bristol Channel
- Swansea Beach, the stretch of beach lining the Swansea Bay inlet between Swansea Docks and the Mumbles
- Swansea Bay (region), a region of Wales designated by the Welsh Assembly Government for policy planning
- Swansea Bay City Region, a local authority partnership in south-west Wales
- Swansea Bay railway station, a former station