| Founded | 1925 |
|---|---|
| Abolished | 2020 |
| Last champions | Penydarren B.G.C. |
| Most successful club(s) | Cardiff City Reserves (7 titles) |
| Website | Official Welsh League website |
The Welsh Football League Challenge Cup (known for a time as the Nathaniel Car Sales League Cup for sponsorship reasons, and not to be confused with the national Welsh League Cup) was a knock-out competition for all members of the divisions that make up the Welsh Football League in south Wales.