2009–10 Welsh Football League Division One
| Season | 2009–10 |
|---|---|
| Champions | Goytre United |
| Relegated | Ton Pentre, Ely Rangers, Bettws, Dinas Powys, Caerleon |
| Goals scored | 1,066 |
| Average goals/game | 3.48 |
| Biggest home win | Afan Lido 9–1 Dinas Powys 24 March 2010 |
| Biggest away win | Caerleon 0–6 Goytre United 29 August 2009 |
| Highest scoring | Afan Lido 9–1 Dinas Powys 24 March 2010 |
← 2008–09 2010–11 → | |
The 2009–10 Welsh Football League Division One began on 15 August 2009 and ended on 22 May 2010. Goytre United won the league by one point.