2012 Main
| Pl | W | D | L | Diff | Pts | |||
| 1 | Sligo Rovers | 30 | 17 | 10 | 3 | 53:23 | 30 | 61 |
| 2 | Drogheda | 30 | 17 | 6 | 7 | 51:36 | 15 | 57 |
| 3 | St. Patricks | 30 | 15 | 10 | 5 | 44:22 | 22 | 55 |
| 4 | Shamrock Rovers | 30 | 14 | 10 | 6 | 56:37 | 19 | 52 |
| 5 | Derry City | 30 | 11 | 6 | 13 | 36:36 | 0 | 39 |
| 6 | Cork City | 30 | 8 | 12 | 10 | 38:36 | 2 | 36 |
| 7 | Bohemians | 30 | 9 | 9 | 12 | 35:38 | -3 | 36 |
| 8 | Shelbourne | 30 | 9 | 8 | 13 | 35:43 | -8 | 35 |
| 9 | UC Dublin | 30 | 8 | 7 | 15 | 32:48 | -16 | 31 |
| 10 | Bray | 30 | 5 | 10 | 15 | 33:54 | -21 | 25 |
| 11 | Dundalk | 30 | 4 | 8 | 18 | 23:63 | -40 | 20 |
| 12 | Monaghan | 0 | 0 | 0 | 0 | 0:0 | 0 | 0 |
Promotion ~ Champions League (Qualification: )
Promotion ~ Europa League (Qualification: )
Division 1 (Relegation)
2012 Relegation
Semi-finals
| 1 | Dundalk | Bye | |
| 2 | Longford | Waterford | 1 : 1, 0 : 2 |
Final
| 1 | Dundalk | Waterford | 2 : 0, 2 : 2 |
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