| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| DH Bowen | 18y 226d | v England | Swansea | 16 Dec 1882 | Details | |
| BL Jones | 18y 285d | v England | Twickenham | 21 Jan 1950 | Details | |
| KS Jarrett | 18y 332d | v England | Cardiff | 15 Apr 1967 | Details | |
| W Bancroft | 18y 336d | v Scotland | Cardiff | 1 Feb 1890 | Details | |
| TJ Davies | 19y 115d | v England | Cardiff | 17 Jan 1953 | Details | |
| TG Price | 19y 184d | v England | Cardiff | 16 Jan 1965 | Details | |
| JPR Williams | 19y 336d | v Scotland | Murrayfield | 1 Feb 1969 | Details | |
| TK Coslett | 20y 6d | v England | Twickenham | 20 Jan 1962 | Details | |
| WA Everson | 19y ?d | v Scotland | Murrayfield | 6 Feb 1926 | Details | |
| GR Williams | 20y 38d | v Ireland | Lansdowne Road | 1 Apr 2000 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| TWJ Prydie | 18y 25d | v Italy | Millennium Stadium | 20 Mar 2010 | Details | |
| NW Biggs | 18y 119d | v Ireland | Swansea | 2 Mar 1889 | Details | |
| GP North | 18y 214d | v South Africa | Millennium Stadium | 13 Nov 2010 | Details | |
| TW Pearson | 18y 238d | v England | Newport | 3 Jan 1891 | Details | |
| DPM Lloyd | 19y 27d | v Scotland | Cardiff | 1 Feb 1890 | Details | |
| HR Robinson | 19y 47d | v Barbarians | Millennium Stadium | 2 Jun 2012 | Details | |
| TJ Brewer | 19y 158d | v England | Twickenham | 21 Jan 1950 | Details | |
| A Hickman | 19y 165d | v England | Cardiff | 18 Jan 1930 | Details | |
| JC Morley | 19y 175d | v England | Twickenham | 19 Jan 1929 | Details | |
| CD Czekaj | 19y 179d | v Canada | Toronto | 11 Jun 2005 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| NW Biggs | 18y 49d | v NZ Natives | Swansea | 22 Dec 1888 | Details | |
| E Williams | 18y 213d | v England | Twickenham | 17 Jan 1925 | Details | |
| BL Jones | 18y 334d | v Ireland | Belfast | 11 Mar 1950 | Details | |
| WG Stewart-Morgan | 19y 62d | v France | Swansea | 26 Feb 1927 | Details | |
| WTH Davies | 19y 204d | v Ireland | Cardiff | 14 Mar 1936 | Details | |
| KS Jarrett | 19y 247d | v England | Twickenham | 20 Jan 1968 | Details | |
| JA Devereux | 19y 294d | v England | Twickenham | 18 Jan 1986 | Details | |
| DL Thomas | 19y 316d | v Ireland | Cardiff | 11 Mar 1961 | Details | |
| LB Davies | 19y 330d | v Italy | Cardiff | 16 Jan 1996 | Details | |
| MC Thomas | 19y 335d | v France | Colombes | 26 Mar 1949 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| FL Williams | 19y 7d | v Scotland | Swansea | 2 Feb 1929 | Details | |
| WH Lewis | 19y 122d | v Ireland | Swansea | 13 Mar 1926 | Details | |
| G Davies | 19y 161d | v Scotland | Murrayfield | 1 Feb 1947 | Details | |
| NR Jenkins | 19y 195d | v England | Cardiff | 19 Jan 1991 | Details | |
| DR Biggar | 19y 226d | v Canada | Toronto | 30 May 2009 | Details | |
| GL Henson | 19y 230d | v Romania | Millennium Stadium | 19 Sep 2001 | Details | |
| RR Morris | 19y 236d | v Scotland | Swansea | 4 Feb 1933 | Details | |
| WC Jones | 19y 314d | v England | Cardiff | 20 Jan 1934 | Details | |
| W Roberts | 19y 334d | v England | Twickenham | 19 Jan 1929 | Details | |
| PG Pearce | 20y 102d | v Ireland | Cardiff | 21 Feb 1981 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| H Tanner | 18y 346d | v New Zealand | Cardiff | 21 Dec 1935 | Details | |
| GO Edwards | 19y 263d | v France | Colombes | 1 Apr 1967 | Details | |
| DA John | 19y 325d | v Ireland | Belfast | 14 Mar 1925 | Details | |
| RN Jones | 20y 69d | v England | Twickenham | 18 Jan 1986 | Details | |
| DJ Peel | 20y 281d | v South Africa | Bloemfontein | 8 Jun 2002 | Details | |
| DEA Roberts | 20y 360d | v England | Cardiff | 18 Jan 1930 | Details | |
| WM Phillips | 20y 363d | v Romania | Wrexham | 27 Aug 2003 | Details | |
| TD Knoyle | 21y 79d | v Argentina | Millennium Stadium | 20 Aug 2011 | Details | |
| TD Holmes | 21y 99d | v Australia | Sydney | 17 Jun 1978 | Details | |
| WJ Delahay | 21y 141d | v England | Cardiff | 21 Jan 1922 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| DS Parker | 19y 213d | v Ireland | Cardiff | 8 Mar 1924 | Details | |
| D Young | 19y 317d | v England | Brisbane | 8 Jun 1987 | Details | |
| EL Jones | 19y 352d | v France | Colombes | 21 Apr 1930 | Details | |
| JD Davies | 20y 15d | v Ireland | Cardiff | 16 Feb 1991 | Details | |
| G Stephens | 20y 52d | v England | Twickenham | 20 Jan 1912 | Details | |
| RP Jones | 20y 162d | v Barbarians | Millennium Stadium | 2 Jun 2012 | Details | |
| ME Davis | 20y 307d | v Australia | Brisbane | 22 Jul 1991 | Details | |
| J Birch | 21y 36d | v Scotland | Inverleith | 4 Feb 1911 | Details | |
| P James | 21y 106d | v Romania | Wrexham | 27 Aug 2003 | Details | |
| DR Prosser | 21y 113d | v Scotland | Murrayfield | 3 Feb 1934 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| DS Parker | 20y 113d | v New Zealand | Swansea | 29 Nov 1924 | Details | |
| NR Gale | 20y 232d | v Ireland | Lansdowne Road | 12 Mar 1960 | Details | |
| H Bennett | 21y 8d | v Argentina | Buenos Aires | 19 Jun 2004 | Details | |
| HC Day | 21y 269d | v Scotland | Murrayfield | 1 Feb 1930 | Details | |
| JR Evans | 22y 130d | v England | Cardiff | 20 Jan 1934 | Details | |
| RE Blakemore | 22y 139d | v England | Cardiff | 18 Jan 1947 | Details | |
| BH Williams | 22y 263d | v France | Cardiff | 25 Sep 1996 | Details | |
| AE Lamerton | 22y 296d | v France | Parc des Princes | 20 Mar 1993 | Details | |
| TR Thomas | 23y 49d | v Canada | Toronto | 11 Jun 2005 | Details | |
| W Travers | 23y 66d | v Scotland | Swansea | 6 Feb 1937 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| EV Watkins | 19y 294d | v New Zealand | Cardiff | 21 Dec 1935 | Details | |
| RC Herrera | 20y 22d | v Scotland | Swansea | 7 Feb 1925 | Details | |
| GO Llewellyn | 20y 250d | v New Zealand | Cardiff | 4 Nov 1989 | Details | |
| G Parsons | 20y 272d | v England | Cardiff | 18 Jan 1947 | Details | |
| T Arthur | 21y 26d | v Scotland | Cardiff | 5 Feb 1927 | Details | |
| HJ Jones | 21y 28d | v England | Twickenham | 19 Jan 1929 | Details | |
| TW Shaw | 21y 95d | v Romania | Bucharest | 12 Nov 1983 | Details | |
| AW Jones | 21y 138d | v Ireland | Millennium Stadium | 4 Feb 2007 | Details | |
| RB Jones | 21y 145d | v England | Twickenham | 21 Jan 1933 | Details | |
| IM Gough | 21y 229d | v South Africa | Pretoria | 27 Jun 1998 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| NH Fender | 19y 187d | v Ireland | Swansea | 8 Mar 1930 | Details | |
| RE Webster | 19y 344d | v Australia | Rotorua | 18 Jun 1987 | Details | |
| H Peacock | 19y 354d | v Scotland | Swansea | 2 Feb 1929 | Details | |
| JL Morgan | 20y 52d | v South Africa | Cardiff | 14 Dec 1912 | Details | |
| RCC Thomas | 20y 57d | v France | Colombes | 26 Mar 1949 | Details | |
| A Lloyd | 20y 62d | v Japan | Osaka | 10 Jun 2001 | Details | |
| JC Quinnell | 20y 125d | v Fiji | Cardiff | 11 Nov 1995 | Details | |
| JJ Thomas | 20y 169d | v Australia | Sydney | 14 Jun 2003 | Details | |
| AW Jones | 20y 265d | v Argentina | Puerto Madryn | 11 Jun 2006 | Details | |
| TT Faletau | 20y 343d | v Australia | Auckland | 21 Oct 2011 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| JF Thompson | 20y 29d | v England | Twickenham | 20 Jan 1923 | Details | |
| TT Faletau | 20y 204d | v Barbarians | Millennium Stadium | 4 Jun 2011 | Details | |
| JJ Thomas | 20y 317d | v England | Brisbane | 9 Nov 2003 | Details | |
| EV Watkins | 20y 341d | v Scotland | Swansea | 6 Feb 1937 | Details | |
| RJ Robins | 20y 352d | v Scotland | Murrayfield | 7 Feb 1953 | Details | |
| WG Thomas | 20y 364d | v England | Twickenham | 15 Jan 1927 | Details | |
| ME Williams | 21y 24d | v France | Cardiff | 25 Sep 1996 | Details | |
| D Nash | 21y 141d | v South Africa | Cardiff | 3 Dec 1960 | Details | |
| LS Quinnell | 21y 148d | v Scotland | Cardiff | 15 Jan 1994 | Details | |
| J Lang | 21y 150d | v France | Swansea | 28 Feb 1931 | Details |
| Player | Pos | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|---|
| DR Biggar | (FH) | 19y 29d | v Canada | Millennium Stadium | 14 Nov 2008 | Details | |
| GL Henson | (UB) | 19y 129d | v Japan | Osaka | 10 Jun 2001 | Details | |
| GP North | (W) | 19y 166d | v Namibia | New Plymouth | 26 Sep 2011 | Details | |
| DJ Peel | (SH) | 19y 290d | v Japan | Tokyo | 17 Jun 2001 | Details | |
| TD Knoyle | (C) | 20y 17d | v New Zealand | Dunedin | 19 Jun 2010 | Details | |
| RE Donovan | (FB) | 20y 58d | v France | Parc des Princes | 19 Mar 1983 | Details | |
| H Bennett | (H) | 20y 66d | v Ireland | Lansdowne Road | 16 Aug 2003 | Details | |
| IL Evans | (FH) | 20y 83d | v France | Cardiff | 4 Sep 1991 | Details | |
| TE James | (C) | 20y 109d | v England | Twickenham | 4 Aug 2007 | Details | |
| P Bennett | (FH) | 20y 149d | v France | Colombes | 22 Mar 1969 | Details |
Only the player's first appearance listed; Only includes matches where the player starts in the respective position, and excludes matches as a substitute.
| Records include the following current or recent matches: |
|
Wales v England at Millennium Stadium, Six Nations, Mar 16, 2013 [30-3 FT] |
|
Wales v Ireland at Millennium Stadium, Six Nations, Feb 2, 2013 [22-30 FT] |
|
Wales v Australia at Millennium Stadium, Dec 1, 2012 [12-14 FT] |
