| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 11-Sep-2011 | Lewis Jones | Wales | 24-Nov-1992 | 18(291) |
| 15-Mar-2012 | Harry Robinson | Wales | 16-Apr-1993 | 18(334) |
| 08-Oct-2011 | Thomas Young | Wales | 18-May-1992 | 19(142) |
| 02-Dec-2011 | Cory Hill | Wales | 10-Feb-1992 | 19(295) |
| 24-Nov-2011 | Macauley Cook | Wales | 31-Dec-1991 | 19(328) |
| 14-Apr-2012 | Luke Hamilton | Scotland | 07-Jan-1992 | 20(98) |
| 23-Sep-2011 | Dan Fish | Wales | 19-Dec-1990 | 20(278) |
| 29-Oct-2011 | Josh Navidi | Wales | 30-Dec-1990 | 20(303) |
| 11-Sep-2011 | Alex Cuthbert | Wales | 05-Apr-1990 | 21(159) |
| 01-Oct-2011 | Rhys Williams | Wales | 16-Jan-1990 | 21(258) |
| 23-Dec-2011 | Lloyd Williams | Wales | 30-Nov-1989 | 22(23) |
| 02-Sep-2011 | Scott Andrews | Wales | 01-Aug-1989 | 22(32) |
| 23-Dec-2011 | Leigh Halfpenny | Wales | 22-Dec-1988 | 23(0) |
| 23-Dec-2011 | Sam Warburton | Wales | 05-Oct-1988 | 23(78) |
| 02-Sep-2011 | Sam Hobbs | Wales | 13-May-1988 | 23(111) |
| 02-Sep-2011 | James Down | Wales | 29-Aug-1987 | 24(4) |
| 02-Sep-2011 | Tom James | Wales | 17-Apr-1987 | 24(138) |
| 01-Jan-2012 | Marc Breeze | Wales | 11-Feb-1987 | 24(324) |
| 30-Mar-2012 | Jamie Roberts | Wales | 08-Nov-1986 | 25(143) |
| 02-Sep-2011 | Chris Czekaj | Wales | 14-Dec-1985 | 25(262) |
| 02-Sep-2011 | Andries Pretorious | Wales | 26-Sep-1985 | 25(341) |
| 11-Sep-2011 | Daffyd Hewitt | Wales | 21-Aug-1985 | 26(21) |
| 02-Sep-2011 | Michael Paterson | New Zealand | 09-May-1985 | 26(116) |
| 23-Dec-2011 | Bradley Davies | Wales | 09-Jan-1985 | 26(348) |
| 02-Sep-2011 | Gavin Evans | Wales | 18-Jul-1984 | 27(45) |
| 11-Sep-2011 | Gareth Davies | Wales | 02-Mar-1984 | 27(192) |
| 02-Dec-2011 | Ryan Tyrrell | Australia | 09-Nov-1983 | 28(23) |
| 02-Sep-2011 | Richie Rees | Wales | 21-May-1983 | 28(104) |
| 29-Oct-2011 | John Yapp | Wales | 09-Apr-1983 | 28(203) |
| 02-Sep-2011 | Casey Laulala | New Zealand | 03-May-1982 | 29(122) |
| 02-Sep-2011 | T Rhys Thomas | Wales | 23-Apr-1982 | 29(132) |
| 02-Sep-2011 | Richard Mustoe | Wales | 09-Dec-1981 | 29(267) |
| 23-Dec-2011 | Gavin Henson | Wales | 01-Feb-1982 | 29(325) |
| 23-Dec-2011 | Gethin Jenkins | Wales | 17-Nov-1980 | 31(36) |
| 02-Sep-2011 | Ceri Sweeney | Wales | 21-Jan-1980 | 31(225) |
| 10-Feb-2012 | Ben Blair | New Zealand | 26-Mar-1979 | 32(321) |
| 16-Sep-2011 | Paul Tito | New Zealand | 09-Jun-1978 | 33(99) |
| 29-Oct-2011 | Dan Parks | Scotland | 26-May-1978 | 33(156) |
| 02-Sep-2011 | Deinol Jones | Wales | 18-Nov-1977 | 33(288) |
| 16-Sep-2011 | Xavier Rush | New Zealand | 13-Jul-1977 | 34(65) |
| 29-Oct-2011 | Taufa'ao Filise | Tonga | 26-May-1977 | 34(156) |
| 02-Sep-2011 | Martyn Williams | Wales | 01-Sep-1975 | 36(1) |
| 11-Sep-2011 | Maama Molitika | Tonga | 26-Aug-1974 | 37(16) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).