| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| GH McAllan | 18y 13d | v Scotland | Lansdowne Road | 15 Feb 1896 | Details | |
| WW Pike | 19y 14d | v England | The Oval | 24 Mar 1879 | Details | |
| JM O'Sullivan | 18y ?d | v Scotland | Edinburgh | 16 Feb 1884 | Details | |
| R Henshaw | 19y 361d | v USA | Houston | 8 Jun 2013 | Details | |
| DB Walkington | 20y 11d | v England | Lansdowne Road | 5 Feb 1887 | Details | |
| PE O'Brien-Butler | 20y 39d | v Scotland | Edinburgh | 20 Feb 1897 | Details | |
| GH Wheeler | 20y 60d | v England | Manchester | 7 Feb 1885 | Details | |
| EC Ridgeway | 20y 164d | v Scotland | Murrayfield | 27 Feb 1932 | Details | |
| AWP Todd | 20y 245d | v Wales | Swansea | 8 Mar 1913 | Details | |
| TJ Kiernan | 21y 37d | v England | Twickenham | 13 Feb 1960 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| JT Brett | 18y 218d | v Wales | Belfast | 14 Mar 1914 | Details | |
| HST Cormac | 18y 270d | v England | Twickenham | 12 Feb 1921 | Details | |
| JH Gage | 18y 331d | v Scotland | Murrayfield | 27 Feb 1926 | Details | |
| TR Hewitt | 18y 362d | v Wales | Cardiff | 8 Mar 1924 | Details | |
| EF Campbell | 19y 32d | v Scotland | Inverleith | 18 Feb 1899 | Details | |
| LM Fitzgerald | 19y 74d | v Pacific Is | Lansdowne Road | 26 Nov 2006 | Details | |
| IGR Davidson | 19y 178d | v England | Lansdowne Road | 4 Feb 1899 | Details | |
| SL Waide | 19y 189d | v England | Lansdowne Road | 13 Feb 1932 | Details | |
| DJ Cussen | 19y 208d | v England | Twickenham | 12 Feb 1921 | Details | |
| JT Doyle | 19y 284d | v Wales | Belfast | 9 Mar 1935 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| AH Bailey | 18y 68d | v Wales | Swansea | 10 Mar 1934 | Details | |
| GV Stephenson | 18y 103d | v France | Lansdowne Road | 3 Apr 1920 | Details | |
| D Hewitt | 18y 131d | v Australia | Lansdowne Road | 18 Jan 1958 | Details | |
| JB Allison | 18y 221d | v England | Lansdowne Road | 4 Feb 1899 | Details | |
| AJFK O'Reilly | 18y 260d | v France | Lansdowne Road | 22 Jan 1955 | Details | |
| FFS Smithwick | 18y 338d | v Scotland | Belfast | 19 Feb 1898 | Details | |
| AR McKibbin | 19y 2d | v Wales | Cardiff | 15 Jan 1977 | Details | |
| AC Pedlow | 19y 53d | v Wales | Swansea | 14 Mar 1953 | Details | |
| LB McMahon | 19y 72d | v England | Twickenham | 14 Feb 1931 | Details | |
| FS Hewitt | 19y 133d | v England | Lansdowne Road | 13 Feb 1926 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| FS Hewitt | 17y 157d | v Wales | Cardiff | 8 Mar 1924 | Details | |
| FMW Harvey | 18y 189d | v Wales | Cardiff | 9 Mar 1907 | Details | |
| RA Lloyd | 18y 192d | v England | Twickenham | 12 Feb 1910 | Details | |
| WM McCombe | 18y 355d | v France | Colombes | 27 Jan 1968 | Details | |
| AH Bailey | 19y 39d | v England | Twickenham | 9 Feb 1935 | Details | |
| WA Cunningham | 19y 352d | v Wales | Cardiff | 13 Mar 1920 | Details | |
| LB McMahon | 20y 15d | v South Africa | Lansdowne Road | 19 Dec 1931 | Details | |
| EO Davy | 20y 231d | v Wales | Belfast | 14 Mar 1925 | Details | |
| BJ McGann | 20y 242d | v France | Lansdowne Road | 25 Jan 1969 | Details | |
| JB Murray | 20y 298d | v France | Lansdowne Road | 26 Jan 1963 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| JMT Quirke | 17y 229d | v England | Twickenham | 10 Feb 1962 | Details | |
| AA Mulligan | 19y 358d | v France | Colombes | 28 Jan 1956 | Details | |
| CJ Scally | 20y 37d | v Romania | Lansdowne Road | 21 Nov 1998 | Details | |
| JC Robbie | 20y 61d | v Australia | Lansdowne Road | 17 Jan 1976 | Details | |
| JB Gardiner | 20y 106d | v England | Leicester | 10 Feb 1923 | Details | |
| BT O'Meara | 20y 330d | v Scotland | Murrayfield | 1 Mar 1997 | Details | |
| R Carroll | 20y 350d | v France | Lansdowne Road | 25 Jan 1947 | Details | |
| JH Burges | 21y 94d | v France | Colombes | 28 Jan 1950 | Details | |
| HM Read | 21y 96d | v England | Twickenham | 12 Feb 1910 | Details | |
| PF Murray | 21y 186d | v France | Colombes | 1 Jan 1927 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| C Teehan | 19y 281d | v England | Twickenham | 11 Feb 1939 | Details | |
| H Kennedy | 20y 240d | v Scotland | Murrayfield | 26 Feb 1938 | Details | |
| TAA Headon | 20y 249d | v Scotland | Lansdowne Road | 25 Feb 1939 | Details | |
| AW Courtney | 20y 285d | v Scotland | Inverleith | 28 Feb 1920 | Details | |
| P O'Callaghan | 20y 302d | v Australia | Lansdowne Road | 21 Jan 1967 | Details | |
| JJC Bermingham | 21y 116d | v England | Twickenham | 12 Feb 1921 | Details | |
| DB O'Loughlin | 21y 214d | v England | Lansdowne Road | 12 Feb 1938 | Details | |
| AM Buchanan | 21y 268d | v England | Lansdowne Road | 13 Feb 1926 | Details | |
| S Walker | 21y 295d | v England | Lansdowne Road | 10 Feb 1934 | Details | |
| JG Ryan | 21y 316d | v England | Twickenham | 11 Feb 1939 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| WP Collopy | 19y 241d | v France | Parc des Princes | 1 Jan 1914 | Details | |
| KD Mullen | 20y 60d | v France | Lansdowne Road | 25 Jan 1947 | Details | |
| D Browne | 20y 82d | v France | Lansdowne Road | 3 Apr 1920 | Details | |
| JC Blackham | 20y 132d | v Scotland | Inverleith | 27 Feb 1909 | Details | |
| JL Cantrell | 22y 7d | v Australia | Lansdowne Road | 17 Jan 1976 | Details | |
| WF Browne | 22y 16d | v England | Twickenham | 14 Feb 1925 | Details | |
| JS Dick | 22y 109d | v England | Twickenham | 10 Feb 1962 | Details | |
| KGM Wood | 22y 129d | v Australia | Brisbane | 5 Jun 1994 | Details | |
| JJ Clune | 22y 242d | v South Africa | Lansdowne Road | 30 Nov 1912 | Details | |
| HC Browne | 23y 73d | v England | Twickenham | 9 Feb 1929 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| JR Brady | 20y 13d | v Scotland | Murrayfield | 24 Feb 1951 | Details | |
| RH Thompson | 20y 217d | v South Africa | Lansdowne Road | 8 Dec 1951 | Details | |
| MG Molloy | 21y 124d | v France | Colombes | 29 Jan 1966 | Details | |
| IMB Stuart | 21y 144d | v England | Belfast | 9 Feb 1924 | Details | |
| DE Spring | 21y 151d | v Scotland | Lansdowne Road | 21 Jan 1978 | Details | |
| J Russell | 21y 185d | v France | Colombes | 1 Jan 1931 | Details | |
| RE Casey | 21y 202d | v England | Twickenham | 5 Feb 2000 | Details | |
| DB O'Loughlin | 21y 228d | v Scotland | Murrayfield | 26 Feb 1938 | Details | |
| WJ McBride | 21y 249d | v England | Twickenham | 10 Feb 1962 | Details | |
| JW Davidson | 21y 309d | v Wales | Lansdowne Road | 2 Mar 1996 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| KG Goodall | 20y 79d | v Australia | Sydney | 13 May 1967 | Details | |
| TA McClelland | 20y 186d | v England | Twickenham | 12 Feb 1921 | Details | |
| JM Neill | 20y 227d | v France | Belfast | 23 Jan 1926 | Details | |
| NAA Murphy | 20y 330d | v Australia | Lansdowne Road | 18 Jan 1958 | Details | |
| JF Slattery | 20y 332d | v South Africa | Lansdowne Road | 10 Jan 1970 | Details | |
| AG Foley | 21y 83d | v England | Lansdowne Road | 21 Jan 1995 | Details | |
| ERP Miller | 21y 103d | v Italy | Lansdowne Road | 4 Jan 1997 | Details | |
| WI Henderson | 21y 107d | v USA | Houston | 8 Jun 2013 | Details | |
| S Ferris | 21y 116d | v Pacific Is | Lansdowne Road | 26 Nov 2006 | Details | |
| JA Donaldson | 21y 124d | v Australia | Lansdowne Road | 18 Jan 1958 | Details |
| Player | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|
| GR Beamish | 19y 291d | v England | Twickenham | 14 Feb 1925 | Details | |
| KG Goodall | 19y 332d | v Australia | Lansdowne Road | 21 Jan 1967 | Details | |
| ERP Miller | 21y 117d | v France | Lansdowne Road | 18 Jan 1997 | Details | |
| JAE Siggins | 21y 187d | v France | Colombes | 1 Jan 1931 | Details | |
| ML Hipwell | 21y 210d | v England | Twickenham | 10 Feb 1962 | Details | |
| S Ferris | 21y 304d | v Argentina | Buenos Aires | 2 Jun 2007 | Details | |
| SD Corkery | 21y 364d | v USA | Lansdowne Road | 5 Nov 1994 | Details | |
| JR Kavanagh | 22y 3d | v France | Belfast | 24 Jan 1953 | Details | |
| TAP Moore | 22y 14d | v Australia | Sydney | 13 May 1967 | Details | |
| T McGrath | 22y 159d | v Wales | Lansdowne Road | 10 Mar 1956 | Details |
| Player | Pos | Age | Opposition | Ground | Date | Match | |
|---|---|---|---|---|---|---|---|
| R Ruddock | (N8) | 19y 225d | v Australia | Brisbane | 26 Jun 2010 | Details | |
| GW D'Arcy | (C) | 19y 247d | v Romania | Lansdowne Road | 15 Oct 1999 | Details | |
| LM Fitzgerald | (FB) | 19y 262d | v Argentina | Buenos Aires | 2 Jun 2007 | Details | |
| R Henshaw | (C) | 20y 3d | v Canada | Toronto | 15 Jun 2013 | Details | |
| CJ Scally | (SH) | 20y 30d | v Georgia | Lansdowne Road | 14 Nov 1998 | Details | |
| JA Hewitt | (C) | 20y 190d | v South Africa | Cape Town | 30 May 1981 | Details | |
| WI Henderson | (F) | 20y 263d | v South Africa | Lansdowne Road | 10 Nov 2012 | Details | |
| BG O'Driscoll | (C) | 20y 267d | v Romania | Lansdowne Road | 15 Oct 1999 | Details | |
| BT O'Meara | (SH) | 20y 316d | v England | Lansdowne Road | 15 Feb 1997 | Details | |
| MJ Kiernan | (C) | 21y 6d | v Wales | Lansdowne Road | 23 Jan 1982 | 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: |
|
Ireland v France at Lansdowne Road, Six Nations, Mar 9, 2013 [13-13 FT] |
|
Ireland v England at Lansdowne Road, Six Nations, Feb 10, 2013 [6-12 FT] |
|
Ireland v Argentina at Lansdowne Road, Nov 24, 2012 [46-24 FT] |
