| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 09-Sep-2011 | Brendan Macken | Ireland | 19-May-1991 | 20(113) |
| 24-Sep-2011 | Jordi Murphy | Ireland | 22-Apr-1991 | 20(155) |
| 01-Jan-2012 | Andrew Conway | Ireland | 11-Jul-1991 | 20(174) |
| 02-Sep-2011 | Rhys Ruddock | Ireland | 13-Oct-1990 | 20(324) |
| 09-Feb-2012 | Colm O'Shea | Ireland | 19-Jan-1991 | 21(21) |
| 02-Sep-2011 | Dominic Ryan | Ireland | 28-May-1990 | 21(97) |
| 02-Sep-2011 | John Cooney | Ireland | 01-May-1990 | 21(124) |
| 01-Oct-2011 | Noel Reid | Ireland | 22-May-1990 | 21(132) |
| 09-Feb-2012 | Darren Hudson | Ireland | 09-Jun-1990 | 21(245) |
| 02-Sep-2011 | David Kearney | Ireland | 19-Jun-1989 | 22(75) |
| 01-Jan-2012 | Jack McGrath | Ireland | 11-Oct-1989 | 22(82) |
| 07-Jan-2012 | Mark Flanagan | Ireland | 02-Aug-1989 | 22(158) |
| 09-Sep-2011 | Ian Madigan | Ireland | 21-Mar-1989 | 22(172) |
| 01-Oct-2011 | Ciaran Ruddock | Ireland | 11-Feb-1989 | 22(232) |
| 02-Sep-2011 | Eion O'Malley | Ireland | 06-Jul-1988 | 23(57) |
| 02-Sep-2011 | Luke Fitzgerald | Ireland | 13-Sep-1987 | 23(354) |
| 04-Nov-2011 | Cian Healy | Ireland | 07-Oct-1987 | 24(28) |
| 02-Sep-2011 | Jamie Hagan | Ireland | 15-Apr-1987 | 24(140) |
| 04-Nov-2011 | Sean O'Brien | Ireland | 14-Feb-1987 | 24(263) |
| 02-Sep-2011 | Devin Toner | Ireland | 29-Jun-1986 | 25(65) |
| 28-Oct-2011 | Fergus McFaddon | Ireland | 17-Jun-1986 | 25(133) |
| 28-Oct-2011 | Sean Cronin | Ireland | 06-May-1986 | 25(175) |
| 02-Sep-2011 | Richard Strauss | Ireland | 29-Jan-1986 | 25(216) |
| 02-Sep-2011 | Fionn Carr | Ireland | 17-Dec-1985 | 25(259) |
| 28-Oct-2011 | Jonathan Sexton | Ireland | 11-Jul-1985 | 26(109) |
| 02-Sep-2011 | Hendrik van der Merwe | South Africa | 03-May-1985 | 26(122) |
| 09-Sep-2011 | Cillian Willis | Ireland | 19-Jan-1985 | 26(233) |
| 02-Sep-2011 | Kevin McLaughlin | Ireland | 20-Sep-1984 | 26(347) |
| 17-Sep-2011 | Leo Auva'a | Ireland | 16-Aug-1984 | 27(31) |
| 01-Oct-2011 | Steven Sykes | South Africa | 05-Aug-1984 | 27(56) |
| 04-Nov-2011 | James Heaslip | Ireland | 15-Dec-1983 | 27(324) |
| 02-Sep-2011 | Matthew Berquist | New Zealand | 11-May-1983 | 28(114) |
| 28-Oct-2011 | Robert Kearney | Ireland | 26-Mar-1983 | 28(216) |
| 02-Sep-2011 | Isikeli Nacewa | Fiji | 22-Jul-1982 | 29(42) |
| 24-Sep-2011 | Nathan White | Ireland | 04-Sep-1981 | 30(20) |
| 04-Nov-2011 | Shane Jennings | Ireland | 08-Jul-1981 | 30(119) |
| 26-Nov-2011 | Eion Redden | Ireland | 20-Nov-1980 | 31(6) |
| 02-Sep-2011 | Damien Browne | Ireland | 17-May-1980 | 31(107) |
| 28-Oct-2011 | Issac Boss | Ireland | 09-Apr-1980 | 31(202) |
| 04-Nov-2011 | Gordon D'Arcy | Ireland | 10-Feb-1980 | 31(268) |
| 28-Oct-2011 | Mike Ross | Ireland | 21-Dec-1979 | 31(312) |
| 23-Mar-2012 | Brian O'Driscoll | Ireland | 21-Jan-1979 | 33(62) |
| 28-Oct-2011 | Leo Cullen | Ireland | 09-Jan-1978 | 33(292) |
| 23-Mar-2012 | Brad Thorn | New Zealand | 03-Feb-1975 | 37(49) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).