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.
The South Wales Amateur 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 sat at level 5 of the Welsh football pyramid.
Bettws F.C. is a football club based in Bettws, near Bridgend, Wales. The team play in the South Wales Alliance League, Division Two. They have previously played in the Welsh Football League. Their ground, North Site, is located in the north-east of the village, east of Heol Glannant and north of Heol Richard Price. At the end of the 2019–20 season they were promoted to the South Wales Alliance League Division Two pending passing the ground inspection criteria.
Bridgend Street are a Welsh football club based in Cardiff. The club currently play in the South Wales Alliance League Premier Division. The club emanate from the Splott district of the capital and have been established since 1899.
Llantwit Major F.C. are a Welsh football club formed in 1962 and are based in the town of Llantwit Major, Vale of Glamorgan, South East Wales. They currently play in the Cymru South, and in 2021–22 finished as league champions.
Ynyshir Albions F.C. are a Welsh football team based in the village Ynyshir in the Rhondda Valley. They currently have a senior side in the Ardal Leagues South West, the third tier of the Welsh football pyramid.
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.
A.F.C. Rhoose are a Welsh football club from Rhoose, a village and community near the sea in the Vale of Glamorgan, Wales, near Barry. They played for two seasons in the Welsh Football League. They currently play in the Vale of Glamorgan League Premier Division.
Pontlottyn Blast Furnace A.F.C. were a Welsh football club from the village of Pontlottyn, in the county borough of Caerphilly, Wales. They played in the Welsh Football League for 34 seasons. The club folded in 2003 before reforming in 2008 as Pontlottyn A.F.C.
The Welsh Football League Division One 2019–20 season is the final season of this football league in South Wales. It is due to be replaced by the FAW League One for 2020–21. It is Tier 3 of the Welsh League Pyramid in South Wales.
Grange Albion Association Football Club is a Welsh football team based in Grangetown, Cardiff, Wales. They play in the South Wales Alliance League Premier Division, which is in the fourth tier of the Welsh football league system.
The South Wales Intermediate Cup is the regional knock-out competition for clubs beneath the umbrella of the South Wales Football Association, at the level of Tier 4 and below of the Welsh Football Pyramid in South Wales.
The South Wales FA Senior Cup is the regional knock-out competition for clubs beneath the umbrella of the South Wales Football Association, in the Welsh Football Pyramid in South Wales.
Lewistown F.C. were a Welsh football club from the village of Lewistown in Wales. They played in the Welsh Football League for 39 seasons, before leaving the league after the 1983–84 season. Other versions of the club played in the Bridgend & District League and South Wales Senior League until the 2013–14 season.
Sully Sports Football Club are a Welsh football club from Sully in the Vale of Glamorgan, Wales. They play in the South Wales Alliance League Division One, which is at the fifth tier of the Welsh football pyramid.
Wales 
