| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 03-May-2013 | Luke McGrath | Ireland | 03-Feb-1993 | 20(89) |
| 01-Sep-2012 | Andrew Conway | Ireland | 11-Jul-1991 | 21(53) |
| 01-Sep-2012 | Brendan Macken | Ireland | 19-May-1991 | 21(106) |
| 27-Oct-2012 | Jordi Murphy | Ireland | 22-Apr-1991 | 21(189) |
| 08-Sep-2012 | Quinn Roux | Ireland | 30-Oct-1990 | 21(314) |
| 04-Nov-2012 | Rhys Ruddock | Ireland | 13-Oct-1990 | 22(23) |
| 08-Sep-2012 | Ben Marshall | Ireland | 08-Jun-1990 | 22(93) |
| 01-Sep-2012 | Dominic Ryan | Ireland | 28-May-1990 | 22(97) |
| 01-Sep-2012 | Noel Reid | Ireland | 22-May-1990 | 22(103) |
| 08-Sep-2012 | John Cooney | Ireland | 01-May-1990 | 22(131) |
| 08-Feb-2013 | Darren Hudson | Ireland | 09-Jun-1990 | 22(245) |
| 28-Sep-2012 | Tom Sexton | Ireland | 10-Dec-1989 | 22(293) |
| 01-Mar-2013 | Jack O'Connell | Ireland | 21-Apr-1990 | 22(315) |
| 08-Sep-2012 | Jack McGrath | Ireland | 11-Oct-1989 | 22(333) |
| 27-Oct-2012 | David Kearney | Ireland | 19-Jun-1989 | 23(130) |
| 01-Sep-2012 | Ian Madigan | Ireland | 21-Mar-1989 | 23(164) |
| 01-Mar-2013 | Mark Flanagan | Ireland | 02-Aug-1989 | 23(211) |
| 22-Sep-2012 | Tom Denton | England | 13-Feb-1988 | 24(222) |
| 16-Feb-2013 | Eion O'Malley | Ireland | 06-Jul-1988 | 24(225) |
| 22-Sep-2012 | Cian Healy | Ireland | 07-Oct-1987 | 24(351) |
| 04-Jan-2013 | Luke Fitzgerald | Ireland | 13-Sep-1987 | 25(114) |
| 01-Sep-2012 | Jamie Hagan | Ireland | 15-Apr-1987 | 25(140) |
| 23-Nov-2012 | Sean O'Brien | Ireland | 14-Feb-1987 | 25(283) |
| 01-Sep-2012 | Devin Toner | Ireland | 29-Jun-1986 | 26(65) |
| 15-Sep-2012 | Fergus McFaddon | Ireland | 17-Jun-1986 | 26(91) |
| 08-Sep-2012 | Sean Cronin | Ireland | 06-May-1986 | 26(126) |
| 01-Sep-2012 | Richard Strauss | Ireland | 29-Jan-1986 | 26(216) |
| 01-Dec-2012 | Michael Bent | Ireland | 25-Apr-1986 | 26(221) |
| 01-Sep-2012 | Fionn Carr | Ireland | 17-Dec-1985 | 26(259) |
| 15-Sep-2012 | Jonathan Sexton | Ireland | 11-Jul-1985 | 27(66) |
| 01-Sep-2012 | Hendrik van der Merwe | South Africa | 03-May-1985 | 27(121) |
| 15-Sep-2012 | Kevin McLaughlin | Ireland | 20-Sep-1984 | 27(360) |
| 01-Sep-2012 | Leo Auva'a | Ireland | 16-Aug-1984 | 28(16) |
| 15-Sep-2012 | James Heaslip | Ireland | 15-Dec-1983 | 28(275) |
| 28-Sep-2012 | Robert Kearney | Ireland | 26-Mar-1983 | 29(187) |
| 04-Nov-2012 | Andrew Goodman | New Zealand | 28-Oct-1982 | 30(8) |
| 01-Sep-2012 | Isikeli Nacewa | Fiji | 22-Jul-1982 | 30(42) |
| 23-Nov-2012 | Aaron Dundon | Ireland | 22-Jun-1982 | 30(155) |
| 01-Sep-2012 | Shane Jennings | Ireland | 08-Jul-1981 | 31(55) |
| 15-Sep-2012 | Eion Redden | Ireland | 20-Nov-1980 | 31(299) |
| 01-Sep-2012 | Damien Browne | Ireland | 17-May-1980 | 32(107) |
| 01-Sep-2012 | Issac Boss | Ireland | 09-Apr-1980 | 32(145) |
| 22-Sep-2012 | Gordon D'Arcy | Ireland | 10-Feb-1980 | 32(225) |
| 15-Sep-2012 | Mike Ross | Ireland | 21-Dec-1979 | 32(269) |
| 15-Sep-2012 | Brian O'Driscoll | Ireland | 21-Jan-1979 | 33(238) |
| 08-Sep-2012 | Leo Cullen | Ireland | 09-Jan-1978 | 34(243) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).