Welsh Football League First Division
| Country |
 Wales
|
|---|---|
| Founded | 1904 |
| Number of teams | 16 |
| Level on pyramid | 1 (1904–1992) 2 (1992–present) |
| Promotion to | Welsh Premier League |
| Relegation to | Welsh Football League Division Two |
| Domestic cup(s) |
Welsh Cup Welsh Football League Cup |
| Current champions |
Barry Town United (2016-17) |
| Website | The Welsh Football League |
 2016–17 Welsh League Division One
|
|
The Welsh Football League Division One, known as the Nathanielcars.co.uk Welsh League First Division for sponsorship reasons, is a football league in South Wales. It forms the top division of the Welsh Football League and the second level of the Welsh football league system.
If the team which finishes top of the Division has good enough ground facilities, it is promoted to the Welsh Premier League and is replaced by one of the two teams finishing bottom of the Premiership. If the Division champions' ground doesn't meet Premiership standards, then the team which finished second may be promoted. The team finishing in bottom position is relegated to the Welsh Football League Division Two.
Since its inception in 1904 it has always been the top flight of the Welsh League, or the Rhymney Valley League and Glamorgan League as it was known until 1912.
This division has changed its name on numerous occasions, which includes Premier Division and National Division.
In 1992 it became level two of the Welsh Football Pyramid following the creation of the Welsh Premier League.
Since its inception in 1904 it has always been the top flight of the Welsh League for the teams located in South Wales.
This division has changed its name on numerous occasions.
In 1992 it became level two of the Welsh Football Pyramid following the creation of the Welsh Premier League.
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