| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 19-May-2012 | Brad Thorn | New Zealand | 03-Feb-1975 | 37(106) |
| 19-May-2012 | Leo Cullen | Ireland | 09-Jan-1978 | 34(131) |
| 19-May-2012 | Brian O'Driscoll | Ireland | 21-Jan-1979 | 33(119) |
| 19-May-2012 | Mike Ross | Ireland | 21-Dec-1979 | 32(150) |
| 19-May-2012 | Gordon D'Arcy | Ireland | 10-Feb-1980 | 32(99) |
| 29-Apr-2012 | Issac Boss | Ireland | 09-Apr-1980 | 32(20) |
| 21-Jan-2012 | Damien Browne | Ireland | 17-May-1980 | 31(249) |
| 19-May-2012 | Eion Redden | Ireland | 20-Nov-1980 | 31(181) |
| 29-Apr-2012 | Shane Jennings | Ireland | 08-Jul-1981 | 30(296) |
| 19-May-2012 | Isikeli Nacewa | Fiji | 22-Jul-1982 | 29(302) |
| 19-May-2012 | Robert Kearney | Ireland | 26-Mar-1983 | 29(55) |
| 19-May-2012 | James Heaslip | Ireland | 15-Dec-1983 | 28(156) |
| 19-May-2012 | Kevin McLaughlin | Ireland | 20-Sep-1984 | 27(241) |
| 19-May-2012 | Jonathan Sexton | Ireland | 11-Jul-1985 | 26(313) |
| 17-Dec-2011 | Hendrik van der Merwe | South Africa | 03-May-1985 | 26(228) |
| 19-May-2012 | Richard Strauss | Ireland | 29-Jan-1986 | 26(111) |
| 19-May-2012 | Fergus McFaddon | Ireland | 17-Jun-1986 | 25(337) |
| 15-Jan-2012 | Sean Cronin | Ireland | 06-May-1986 | 25(254) |
| 15-Jan-2012 | Devin Toner | Ireland | 29-Jun-1986 | 25(200) |
| 19-May-2012 | Sean O'Brien | Ireland | 14-Feb-1987 | 25(95) |
| 21-Jan-2012 | Jamie Hagan | Ireland | 15-Apr-1987 | 24(281) |
| 29-Apr-2012 | Luke Fitzgerald | Ireland | 13-Sep-1987 | 24(229) |
| 19-May-2012 | Cian Healy | Ireland | 07-Oct-1987 | 24(225) |
| 21-Jan-2012 | Eion O'Malley | Ireland | 06-Jul-1988 | 23(198) |
| 15-Jan-2012 | David Kearney | Ireland | 19-Jun-1989 | 22(210) |
| 21-Jan-2012 | Rhys Ruddock | Ireland | 13-Oct-1990 | 21(100) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).