| Competition: | Welsh Premier League |
| Season: | 2011–12 |
| Winners: | TNS |
| Relegated: | Neath |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | TNS |
| Continentalcup2: | Europa League |
| Continentalcup2 Qualifiers: | Bangor City Llanelli Cefn Druids (via cup) |
| Biggest Home Win: | Llanelli 9–2 Newtown |
| Biggest Away Win: | Neath 1–5 Llanelli Aberystwyth Town 0–4 Bala Town Newtown 0–4 Neath Prestatyn 0–4 TNS Newtown 0–4 Airbus |
| Highest Scoring: | Llanelli 9–2 Newtown |
| Matches: | 192 |
| Total Goals: | 608 |
| Prevseason: | 2010–11 |
| Nextseason: | 2012–13 |
The 2011–12 Welsh Premier League season was the 20th season of the Welsh Premier League, the highest football league of Wales since its establishment in 1992. Bangor City were the defending champions, but lost their title to The New Saints in a meeting on the final game of the season.
Haverfordwest County were relegated to the 2011–12 Football League Division One at the end of the 2010–11 season after finishing at the bottom of the table. The club thus ended a fourteen-year tenure in the league. They were replaced by 2010–11 Football League runners-up Afan Lido, who returned to the Premier League after six seasons.
Originally, Bala Town as 11th-placed team were going to be relegated as well; however, they were eventually spared as 2010–11 Cymru Alliance champions Connah's Quay Nomads were denied a Premier League licence.[1]
| Team | Stadium | Capacity | |
|---|---|---|---|
| Aberystwyth Town | Park Avenue | 5,500 | |
| Afan Lido | Marston Stadium | 4,200 | |
| Airbus UK Broughton | The Airfield | 2,100 | |
| Bala Town | Maes Tegid | 3,000 | |
| Bangor City | Nantporth | 3,000 | |
| Carmarthen Town | Richmond Park | 3,000 | |
| Llanelli AFC | Stebonheath Park | 3,700 | |
| Neath | The Gnoll | 7,000 | |
| Newtown AFC | Latham Park | 5,000 | |
| Port Talbot Town | Victoria Road | 2,500 | |
| Prestatyn Town | Bastion Road | 2,500 | |
| The New Saints | Park Hall | 2,500 |
Teams played each other twice on a home and away basis, before the league was split into two groups at the end of round 22 – the top six and the bottom six.Clubs in these groups played each other twice again bringing the total fixture count to 32.
Top sixBottom six
Teams who finished in positions fourth through eighth at the end of the season participated in a play-off to determine the second participant for the 2012–13 UEFA Europa League. As Neath failed to win their appeal against an FAW Domestic licence, Aberystwyth Town took their place (See Relegation Section)
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| Rank | Player | Club | Goals |
|---|---|---|---|
| 1 | Rhys Griffiths | Llanelli AFC | 22 |
| 2 |  Greg Draper | The New Saints | 21 |
| 3 | Les Davies | Bangor City | 15 |
| 4 | Ian Sheridan | Airbus UK/Bala Town | 14 |
| Lee Hunt | Bala Town | 14 | |
| 5 | Luke Bowen | Neath Athletic | 13 |