|Number of teams||32 (16 in each division)|
|Level on pyramid||5 and 6|
|Promotion to||Welsh Football League Division Three|
|Domestic cup(s)||CW Bruty League Challenge Cup|
|Last champions||Pontlottyn (Division 1)|
Cadoxton Barry (Division 2)
|Most championships||Bridgend Street (5 titles)|
The South Wales Senior League is a former football league in South Wales. The league consisted of two divisions, named Divisions One and Two. Division One was a feeder to the Welsh Football League Division Three, and therefore sat at levels 5 of the Welsh football pyramid.
The league was dominated by clubs from Cardiff with no fewer than 14 titles going to the city. Bridgend Street won it four times and their success in 2011 saw them move up into the Welsh Football League for the first time.
The league was merged with South Wales Amateur League in 2015–16 season to form South Wales Alliance League.
|Season||Division One||Division Two|
|1991-92||Les Croupiers Caerau (Ely)||No competition|
|1992-93||Grange Quins||No competition|
|1993-94||Lisvane Heath Hornets||No competition|
|1994-95||Les Croupiers Caerau (Ely)||Penydarren BC|
|1995-96||Lisvane FC||Llangynayd Rangers|
|1996-97||Les Croupiers Caerau (Ely)||Butetown|
|1997-98||Caerau (Ely)||Wenvoe Park|
|1998-99||AFC Llwydcoed||Ynyshir Albions|
|2000-01||Pentwyn Dynamos||AFC Whitchurch|
|2004-05||Bridgend Street||Nelson Cavaliers|
|2005-06||Bridgend Street||Cwmbach Royal Stars|
|2006-07||Sully Sports||St Athan|
|2009-10||Bridgend Street||Cadoxton Barry|
|2010-11||Bridgend Street||Lisvane - Llanishan|
|2012-13||Sully Sports||Cornelly United|
|2013-14||Cwm Welfare||Max United|
The Welsh Football League Division One, known as the Nathanielcars.co.uk Welsh League First Division for sponsorship reasons, was a football league in South Wales. It formed the top division of the Welsh Football League and the second level of the Welsh football league system until the 2019–20 season when it was replaced by the Cymru South. From the 2019–20 season it operated at the third level of the Welsh football league system.
The Welsh Football League Division Two, was a football league and forms the fourth level of the Welsh football league system in South Wales.
The Welsh Football League Division Three, was a football league.
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Trefelin Boys & Girls Club, often shortened to Trefelin BGC, is an association football club who play their home games at Ynys park in Port Talbot, Neath Port Talbot, Wales. Their men's team play in the Cymru South.
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The South Wales Alliance League is a football league structure in South Wales, currently known for sponsorship reasons as The Highadmit Projects South Wales Alliance League. The top tier of the league, the Premier Division is at the fourth tier of the Welsh Football Pyramid and offers promotion opportunities to the tier 3 Football Association of Wales administered Ardal Leagues. The league is run by the South Wales Football Association.
The Cardiff Combination Football League is a football league covering the city of Cardiff and surrounding areas in South Wales. The leagues are at the seventh, eighth and ninth levels of the Welsh football league system.
The Cardiff & District League is a football league covering the city of Cardiff and surrounding areas in South Wales. The leagues are at the seventh to tenth levels of the Welsh football league system.
The Rhondda & District League is a football league covering the Rhondda and surrounding areas in South Wales. The leagues are at the seventh and eighth levels of the Welsh football league system.
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