Cymru South

The Cymru South is a regional football league in Wales, covering the southern half of the country. It initially had clubs with semi-professional status. Together with the Cymru North, it forms the second tier of the Welsh football league system.

The first year of its operation was in 2019–20 with the Football Association of Wales owning and administering the tier 2 leagues for the first time. These changes followed on from a review of the Welsh Football Pyramid. Prior to 2019, the equivalent league was the Welsh Football League Division One, covering South Wales.

Member clubs for 2023–24 season
The following teams were confirmed as members of the league for the 2023–24 season.

Champions

 * 2019–20: Swansea University
 * 2020–21: Competition cancelled due to COVID-19 restrictions
 * 2021–22: Llantwit Major
 * 2022–23: Barry Town

Promoted to Cymru Premier

 * 2019–20: Haverfordwest County (runners-up)
 * 2020-21: Competition cancelled
 * 2021–22: Pontypridd Town (runners-up)
 * 2022–23: Barry Town

Relegated into Cymru South from Cymru Premier

 * 2019–20: Carmarthen Town
 * 2020–21: Competition cancelled
 * 2021-22: Barry Town United
 * 2022–23: None

Relegated from Cymru South

 * 2019–20: STM Sports, Cwmamman United and Caerau (Ely)
 * 2020–21: Competition cancelled
 * 2021–22: Port Talbot Town,  Risca United and  Undy Athletic
 * 2022–23: Swansea University and Ynyshir Albions

Promoted into Cymru South

 * 2019–20: Trefelin, Risca United and Port Talbot Town
 * 2020–21: Competition cancelled
 * 2021–22: Abergavenny Town, Pontardawe Town and Ynyshir Albions
 * 2022–23: Abertillery Bluebirds, Baglan Dragons and Caerau (Ely)