2010–11 Welsh Football League Division One
| Season | 2010–11 |
|---|---|
| Champions | Bryntirion Athletic |
| Promoted | Afan Lido |
| Relegated | Caldicot Town Garden Village Penrhiwceiber Rangers |
| Matches played | 240 |
| Goals scored | 843 (3.51 per match) |
| Biggest home win | Bridgend Town 7–0 Caerau (Ely) 29 September 2010 West End 7–0 Penrhiwceiber Rangers 30 October 2010 Caerau (Ely) 7–0 Cardiff Corinthians 19 February 2011 |
| Biggest away win | Penrhiwceiber Rangers 0–7 Bridgend Town 18 September 2010 Cwmbran Celtic 0–7 Bryntirion Athletic 22 January 2011 Aberaman Athletic 0–7 Pontardawe Town 2 February 2011 |
| Highest scoring | Taff's Well 5–4 Aberaman Athletic 6 October 2010 |
← 2009–10 2011–12 → | |
The 2010–11 Welsh Football League Division One began on 1 September 2010 and ended on 28 May 2011. Bryntirion Athletic won the league by five points.