| 1 | |  Sligo Rovers | 30 | 17 | 10 | 3 | 53 | 23 | 30 | 61 | B21:05 | 21/09/12 | R 28  Bray Wanderers 0 Sligo Rovers 0 G21:45 | 29/09/12 | R 29 Sligo Rovers 4 Derry City 1 B22:00 | 05/10/12 | R 30 Cork City FC 0 Sligo Rovers 0 G17:45 | 13/10/12 | R 31 Sligo Rovers 3 St. Patrick´s Athletic 2 M21:05 | 19/10/12 | R 32 Drogheda United 2 Sligo Rovers 1 M21:45 | 26/10/12 | R 33 Sligo Rovers 0 Shamrock Rovers 2 |
| 2 | |  Drogheda United | 30 | 17 | 6 | 7 | 51 | 36 | 15 | 57 | B21:05 | 28/09/12 | R 29 Drogheda United 0 St. Patrick´s Athletic 0 G21:45 | 01/10/12 | R 30 Drogheda United 2 Shelbourne FC 1 M21:45 | 13/10/12 | R 31 University College Dublin 1 Drogheda United 0 G21:05 | 19/10/12 | R 32 Drogheda United 2 Sligo Rovers 1 G21:45 | 26/10/12 | R 33 Bohemians Dublin 1 Drogheda United 4 |
| 3 | |  St. Patrick´s Athletic | 30 | 15 | 10 | 5 | 44 | 22 | 22 | 55 | G21:45 | 25/09/12 | R 28 St. Patrick´s Athletic 2 Shamrock Rovers 1 B21:05 | 28/09/12 | R 29 Drogheda United 0 St. Patrick´s Athletic 0 G21:45 | 01/10/12 | R 30 St. Patrick´s Athletic 5 University College Dublin 0 M17:45 | 13/10/12 | R 31 Sligo Rovers 3 St. Patrick´s Athletic 2 M21:45 | 19/10/12 | R 32 Derry City 2 St. Patrick´s Athletic 1 G21:45 | 26/10/12 | R 33 St. Patrick´s Athletic 1 Cork City FC 0 |
| 4 | |  Shamrock Rovers | 30 | 14 | 10 | 6 | 56 | 37 | 19 | 52 | M21:45 | 25/09/12 | R 28 St. Patrick´s Athletic 2 Shamrock Rovers 1 G22:00 | 28/09/12 | R 29 Shamrock Rovers 7 Dundalk 0 G21:45 | 05/10/12 | R 30 Bray Wanderers 1 Shamrock Rovers 3 M21:00 | 13/10/12 | R 31 Shamrock Rovers 1 Derry City 3 G22:00 | 19/10/12 | R 32 Shamrock Rovers 2 University College Dublin 1 G21:45 | 26/10/12 | R 33 Sligo Rovers 0 Shamrock Rovers 2 |
| 5 | |  Derry City | 30 | 11 | 6 | 13 | 36 | 36 | 0 | 39 | M21:45 | 21/09/12 | R 28 Derry City 1 University College Dublin 2 M21:45 | 29/09/12 | R 29 Sligo Rovers 4 Derry City 1 G21:45 | 02/10/12 | R 30 Derry City 4 Dundalk 0 G21:00 | 13/10/12 | R 31 Shamrock Rovers 1 Derry City 3 G21:45 | 19/10/12 | R 32 Derry City 2 St. Patrick´s Athletic 1 |
| 6 | |  Cork City FC | 30 | 8 | 12 | 10 | 38 | 36 | 2 | 36 | B21:45 | 21/09/12 | R 28 Bohemians Dublin 1 Cork City FC 1 B22:00 | 05/10/12 | R 30 Cork City FC 0 Sligo Rovers 0 M22:00 | 13/10/12 | R 31 Shelbourne FC 3 Cork City FC 2 G21:45 | 19/10/12 | R 32 Cork City FC 3 Dundalk 0 M21:45 | 26/10/12 | R 33 St. Patrick´s Athletic 1 Cork City FC 0 |
| 7 | |  Bohemians Dublin | 30 | 9 | 9 | 12 | 35 | 38 | -3 | 36 | B21:45 | 21/09/12 | R 28 Bohemians Dublin 1 Cork City FC 1 B21:45 | 28/09/12 | R 29 University College Dublin 2 Bohemians Dublin 2 B21:00 | 13/10/12 | R 31 Dundalk 2 Bohemians Dublin 2 G21:45 | 19/10/12 | R 32 Bray Wanderers 1 Bohemians Dublin 4 M21:45 | 26/10/12 | R 33 Bohemians Dublin 1 Drogheda United 4 |
| 8 | |  Shelbourne FC | 30 | 9 | 8 | 13 | 35 | 43 | -8 | 35 | G21:45 | 21/09/12 | R 28 Dundalk 0 Shelbourne FC 1 B22:00 | 28/09/12 | R 29 Shelbourne FC 0 Bray Wanderers 0 M21:45 | 01/10/12 | R 30 Drogheda United 2 Shelbourne FC 1 G22:00 | 13/10/12 | R 31 Shelbourne FC 3 Cork City FC 2 B21:45 | 26/10/12 | R 33 University College Dublin 1 Shelbourne FC 1 |
| 9 | |  University College Dublin | 30 | 8 | 7 | 15 | 32 | 48 | -16 | 31 | G21:45 | 21/09/12 | R 28 Derry City 1 University College Dublin 2 B21:45 | 28/09/12 | R 29 University College Dublin 2 Bohemians Dublin 2 M21:45 | 01/10/12 | R 30 St. Patrick´s Athletic 5 University College Dublin 0 G21:45 | 13/10/12 | R 31 University College Dublin 1 Drogheda United 0 M22:00 | 19/10/12 | R 32 Shamrock Rovers 2 University College Dublin 1 B21:45 | 26/10/12 | R 33 University College Dublin 1 Shelbourne FC 1 |
| 10 | |  Bray Wanderers | 30 | 5 | 10 | 15 | 33 | 54 | -21 | 25 | B21:05 | 21/09/12 | R 28 Bray Wanderers 0 Sligo Rovers 0 B22:00 | 28/09/12 | R 29 Shelbourne FC 0 Bray Wanderers 0 M21:45 | 05/10/12 | R 30 Bray Wanderers 1 Shamrock Rovers 3 M21:45 | 19/10/12 | R 32 Bray Wanderers 1 Bohemians Dublin 4 M21:45 | 26/10/12 | R 33 Dundalk 2 Bray Wanderers 1 |
| 11 | |  Dundalk | 30 | 4 | 8 | 18 | 23 | 63 | -40 | 20 | M21:45 | 21/09/12 | R 28 Dundalk 0 Shelbourne FC 1 M22:00 | 28/09/12 | R 29 Shamrock Rovers 7 Dundalk 0 M21:45 | 02/10/12 | R 30 Derry City 4 Dundalk 0 B21:00 | 13/10/12 | R 31 Dundalk 2 Bohemians Dublin 2 M21:45 | 19/10/12 | R 32 Cork City FC 3 Dundalk 0 G21:45 | 26/10/12 | R 33 Dundalk 2 Bray Wanderers 1 |
