| MD | Players | Nationality | DOB | A(D) |
|---|---|---|---|---|
| 13-Sep-2015 | Owen Watkin | Wales | 12-Oct-1996 | 18(336) |
| 13-Sep-2015 | Sam Underhill | England | 22-Jul-1996 | 19(52) |
| 01-Apr-2016 | Adam Beard | Wales | 07-Jan-1996 | 20(85) |
| 13-Sep-2015 | Rory Thornton | Wales | 16-Mar-1995 | 20(181) |
| 02-Oct-2015 | Dafydd Howells | Wales | 22-Mar-1995 | 20(194) |
| 13-Sep-2015 | Nicky Smith | Wales | 07-Apr-1994 | 21(159) |
| 06-Dec-2015 | Oliver Cracknell | Wales | 26-May-1994 | 21(194) |
| 04-Sep-2015 | Sam Davies | Wales | 06-Oct-1993 | 21(333) |
| 13-Sep-2015 | Dan Baker | Wales | 05-Jul-1992 | 23(69) |
| 04-Sep-2015 | Tom Habberfield | Wales | 19-May-1992 | 23(107) |
| 24-Oct-2015 | Eli Walker | Wales | 28-Mar-1992 | 23(209) |
| 04-Sep-2015 | Sam Parry | Wales | 17-Dec-1991 | 23(261) |
| 04-Sep-2015 | Tom Grabham | Wales | 20-Jun-1991 | 24(76) |
| 06-Dec-2015 | Jeff Hassler | Canada | 21-Aug-1991 | 24(107) |
| 31-Jan-2016 | Rynier Bernardo | South Africa | 27-Aug-1991 | 24(157) |
| 13-Sep-2015 | Hanno Dirksen | South Africa | 31-Mar-1991 | 24(166) |
| 06-Dec-2015 | Tyler Ardron | Canada | 16-Jun-1991 | 24(173) |
| 04-Sep-2015 | Ben John | Wales | 28-Feb-1991 | 24(188) |
| 04-Sep-2015 | Lloyd Peers | Wales | 02-Feb-1991 | 24(214) |
| 13-Sep-2015 | Lloyd Ashley | Wales | 02-Feb-1991 | 24(223) |
| 04-Sep-2015 | Lloyd Evans | Wales | 14-Sep-1990 | 24(355) |
| 04-Sep-2015 | Kristian Phillips | Wales | 02-Sep-1990 | 25(2) |
| 17-Oct-2015 | Josh Matavasi | Fiji | 05-Oct-1990 | 25(12) |
| 04-Sep-2015 | Marc Thomas | Wales | 15-Jul-1990 | 25(51) |
| 24-Oct-2015 | James King | Wales | 24-Jul-1990 | 25(92) |
| 01-Nov-2015 | Daniel Biggar | Wales | 16-Oct-1989 | 26(16) |
| 01-Nov-2015 | Justin Tipuric | Wales | 06-Aug-1989 | 26(87) |
| 19-Feb-2016 | Ma'afu Fia | Tonga | 22-Nov-1989 | 26(89) |
| 04-Sep-2015 | Daniel Evans | Wales | 15-Nov-1988 | 26(293) |
| 04-Sep-2015 | Dimitri Arhip | Moldova | 12-Nov-1988 | 26(296) |
| 17-Oct-2015 | Ryan Bevington | Wales | 09-Dec-1988 | 26(312) |
| 14-Feb-2016 | JJ Engelbrecht | South Africa | 22-Feb-1989 | 26(357) |
| 27-Feb-2016 | Rhys Webb | Wales | 09-Dec-1988 | 27(79) |
| 01-Nov-2015 | Scott Baldwin | Wales | 12-Jul-1988 | 27(111) |
| 01-Nov-2015 | Dan Lydiatt | Wales | 18-Dec-1987 | 27(318) |
| 04-Sep-2015 | De Kock Steenkamp | South Africa | 16-Feb-1987 | 28(200) |
| 04-Sep-2015 | Jonathan Spratt | Wales | 28-Apr-1986 | 29(129) |
| 01-Nov-2015 | Aaron Jarvis | Wales | 20-May-1986 | 29(165) |
| 07-Nov-2015 | Alan Wyn Jones | Wales | 19-Sep-1985 | 30(49) |
| 13-Sep-2015 | Brendon Leonard | New Zealand | 16-Apr-1985 | 30(150) |
| 17-Oct-2015 | Richard Fussell | Wales | 12-Apr-1984 | 31(188) |
| 04-Sep-2015 | Gareth Delve | Wales | 30-Dec-1982 | 32(248) |
| 01-Nov-2015 | Paul James | Wales | 13-May-1982 | 33(172) |
| 04-Sep-2015 | Joe Bearman | England | 28-Feb-1979 | 36(188) |
MD = Match date,
DOB = Date of birth,
A(D) = Age(days).