| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 30-Sep-2011 | Patrick Butler | Ireland | 01-Dec-1990 | 20(303) |
| 26-Nov-2011 | Luke O'Dea | Ireland | 18-Jul-1990 | 21(131) |
| 09-Sep-2011 | Simon Zebo | Ireland | 16-Mar-1990 | 21(177) |
| 03-Sep-2011 | Danny Barnes | Ireland | 07-Oct-1989 | 21(331) |
| 03-Sep-2011 | Peter O'Mahony | Ireland | 17-Sep-1989 | 21(351) |
| 18-Feb-2012 | Dave O'Callaghan | Ireland | 12-Jan-1990 | 22(37) |
| 28-Oct-2011 | Conor Murray | Ireland | 20-Apr-1989 | 22(191) |
| 30-Sep-2011 | Scott Deasy | Ireland | 11-Oct-1988 | 22(354) |
| 30-Dec-2011 | Ian Nagle | Ireland | 17-Oct-1988 | 23(73) |
| 03-Sep-2011 | Mike Sherry | Ireland | 18-Jun-1988 | 23(76) |
| 26-Dec-2011 | Sean Scanlon | Ireland | 01-Sep-1988 | 23(115) |
| 17-Sep-2011 | David Foley | Ireland | 16-May-1988 | 23(123) |
| 21-Apr-2012 | Dave Kilcoyne | Ireland | 14-Dec-1988 | 23(128) |
| 28-Oct-2011 | Will Chambers | Australia | 26-May-1988 | 23(154) |
| 03-Sep-2011 | Stephen Archer | Ireland | 29-Jan-1988 | 23(217) |
| 28-Oct-2011 | Keith Earls | Ireland | 02-Oct-1987 | 24(26) |
| 23-Sep-2011 | Tommy O'Donnell | Ireland | 21-May-1987 | 24(125) |
| 03-Sep-2011 | Ian Keatley | Ireland | 01-Apr-1987 | 24(155) |
| 24-Feb-2012 | Felix Jones | Ireland | 15-Aug-1987 | 24(193) |
| 05-May-2012 | Ivan Dineen | Scotland | 05-Jul-1987 | 24(305) |
| 23-Sep-2011 | Duncan Williams | Ireland | 17-Apr-1986 | 25(159) |
| 17-Sep-2011 | Tom Gleeson | Ireland | 26-Sep-1985 | 25(356) |
| 03-Sep-2011 | Billy Holland | Ireland | 03-Aug-1985 | 26(31) |
| 03-Mar-2012 | Savenaca Tokula | New Zealand | 15-Jun-1985 | 26(262) |
| 03-Sep-2011 | Johne Murphy | Ireland | 10-Nov-1984 | 26(297) |
| 03-Sep-2011 | Dennis Hurley | Ireland | 15-Jul-1984 | 27(49) |
| 09-Sep-2011 | Damian Varley | Ireland | 29-Oct-1983 | 27(315) |
| 28-Oct-2011 | Donnacha Ryan | Ireland | 11-Dec-1983 | 27(321) |
| 26-Nov-2011 | Tomas O'Leary | Ireland | 22-Oct-1983 | 28(35) |
| 30-Sep-2011 | Dennis Fogerty | Ireland | 16-Jul-1983 | 28(76) |
| 09-Sep-2011 | Wian du Preez | South Africa | 30-Oct-1982 | 28(314) |
| 03-Sep-2011 | Niall Ronan | Ireland | 14-Sep-1982 | 28(354) |
| 03-Sep-2011 | Lifeimi Mafi | New Zealand | 15-Aug-1982 | 29(19) |
| 28-Oct-2011 | Denis Leamy | Ireland | 27-Nov-1981 | 29(335) |
| 03-Sep-2011 | James Coughlan | Ireland | 09-Dec-1980 | 30(268) |
| 28-Oct-2011 | BJ Botha | South Africa | 04-Jan-1980 | 31(297) |
| 28-Oct-2011 | Paul O'Connell | Ireland | 20-Oct-1979 | 32(8) |
| 08-Oct-2011 | Donncha O'Callaghan | Ireland | 24-Mar-1979 | 32(198) |
| 03-Sep-2011 | Michael O'Driscoll | Ireland | 08-Oct-1978 | 32(330) |
| 03-Sep-2011 | Doug Howlett | New Zealand | 21-Sep-1978 | 32(347) |
| 03-Sep-2011 | Peter Stringer | Ireland | 13-Dec-1977 | 33(264) |
| 03-Sep-2011 | Marcus Horan | Ireland | 07-Sep-1977 | 33(361) |
| 28-Oct-2011 | Ronan O'Gara | Ireland | 07-Mar-1977 | 34(235) |
| 24-Mar-2012 | David Wallace | Ireland | 08-Jul-1976 | 35(260) |
| 09-Sep-2011 | John Hayes | Ireland | 02-Nov-1973 | 37(311) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).