Mid Wales South League
| Folded | 2023 |
|---|---|
| Country | Wales |
| Other club(s) from | England |
| Divisions | 1 |
| Number of clubs | 5 |
| Level on pyramid | 5 |
| Promotion to | Mid Wales Football League |
| Last champions | Newcastle (2022–23) |
| Most championships | Builth Wells/ reserves (11 titles) |
The Mid Wales South League was an association football league, from Mid Wales but some from just over the border in England. It was last called the Watson Financial Mid Wales League (South) for sponsorship reasons.
The league last operated in the fifth level of the Welsh football league system. Teams were eligible to be promoted to the Mid Wales Football League if standards and facilities fall into line with the regulations of the Mid Wales League. There was no league directly below the South League.
The league was sometimes written as the "Mid-Wales League (South)".
In the 2019–20 season, when the season was curtailed due to the coronavirus pandemic, Brecon Corries were champions with a 100% record of 16 wins from 16 games with 143 goals scored and just two conceded. In addition to these statistics the team scored a 27–0 win at Knighton Town Reserves which was expunged from the record books following Knighton’s withdrawal from the league.
The final season of the league, 2022–23 saw only five clubs compete in the league. The league planned to revive the league for the 2024–25 season but this did not materialise but in April 2025 the league confirmed they were planning to return for the 2025–26 season.
The following clubs are planned to participate:
- Brecon
- Builth Wells (reserves)
- Hay St Marys
- Hay St Marys (development)
- Knighton Town (reserves)
- Llanidloes Town (reserves)
- Presteigne St. Andrews
- Rhayader Town (reserves)
- St Harmon
- Talgarth Town