Tallest: 1 · Year
By quarter-hour; stoppage time counts as the 45th or 90th minute.
Tallest: 1 · Minute
Republic of Ireland's matches with known line-ups from their first recorded cap to their last.
| With them | 30 | 17 | 7 | 6 | 40 | 24 | 56.7% |
| Without them | 15 | 6 | 8 | 1 | 19 | 8 | 40% |
| Alexander Frei | Switzerland | 3 |
| Johann Vogel | Switzerland | 3 |
| Patrick Müller | Switzerland | 3 |
| Raphael Wicky | Switzerland | 3 |
| Victor Onopko | Russia | 3 |
| Abas Soan | Israel | 2 |
| Adoram Keisi | Israel | 2 |
| Adrian Aliaj | Albania | 2 |
| Aleksandr Amisulashvili | Georgia | 2 |
| Alexander Kerzhakov | Russia | 2 |
| Romania | 1 | 1 |
Finals and qualifying campaigns alike.
Nothing here.
| 27 May 2004 | v Romania | 1–0 | 85′ | — | Winning goal | 1–0 | Friendly |
In a recorded line-up, on the scoresheet or booked. “—” where the line-up isn't known.
| 12 Oct 2005 | v Switzerland | 0–0 | started | 90 | — | — | FIFA World Cup qualification 2005 |
| 8 Oct 2005 | v Cyprus | 1–0 | came on 45′ | 45 | — | — | FIFA World Cup qualification 2005 |
| 17 Aug 2005 | v Italy | 1–2 | started, off 39′ | 39 | — | — | Friendly |
| 4 Jun 2005 | v Israel | 2–2 | started | 90 | — | — | FIFA World Cup qualification 2005 |
| 26 Mar 2005 | v Israel | 1–1 | came on 85′ | 5 | — | — | FIFA World Cup qualification 2005 |
| 9 Feb 2005 | v Portugal | 1–0 | started | 90 | — | — | Friendly |
| 5 Jun 2004 | v Netherlands | 1–0 | started | 90 | — | — | Friendly |
| 2 Jun 2004 | v Jamaica | 1–0 | came on 83′ | 7 | — | — | Unity Cup 2004 |
| 29 May 2004 | v Nigeria | 0–3 | started, off 66′ | 66 | — | — | Unity Cup 2004 |
| 27 May 2004 | v Romania | 1–0 | started | 90 | 1 | — | Friendly |
| 31 Mar 2004 | v Czech Republic | 2–1 | started | 90 | — | — | Friendly |
| 18 Feb 2004 | v Brazil | 0–0 | started | 90 | — | — | Friendly |
| 18 Nov 2003 | v Canada | 3–0 | came on 11′ | 79 | — | — | Friendly |
| 11 Oct 2003 | v Switzerland | 0–2 | started, off 74′ | 74 | — | — | UEFA Euro qualification 2003 |
| 6 Sep 2003 | v Russia | 1–1 | started | 90 | — | — | UEFA Euro qualification 2003 |
| 19 Aug 2003 | v Australia | 2–1 | started, off 20′ | 20 | — | — | Friendly |
| 11 Jun 2003 | v Georgia | 2–0 | started | 90 | — | — | UEFA Euro qualification 2003 |
| 7 Jun 2003 | v Albania | 2–1 | started | 90 | — | — | UEFA Euro qualification 2003 |
| 30 Apr 2003 | v Norway | 1–0 | started | 90 | — | — | Friendly |
| 2 Apr 2003 | v Albania | 0–0 | started | 90 | — | — | UEFA Euro qualification 2003 |
| 29 Mar 2003 | v Georgia | 2–1 | started | 90 | — | — | UEFA Euro qualification 2003 |
| 12 Feb 2003 | v Scotland | 2–0 | started | 90 | — | — | Friendly |
| 20 Nov 2002 | v Greece | 0–0 | started | 90 | — | — | Friendly |
| 16 Oct 2002 | v Switzerland | 1–2 | started | 90 | — | — | UEFA Euro qualification 2002 |
| 7 Sep 2002 | v Russia | 2–4 | started | 90 | — | — | UEFA Euro qualification 2002 |
| 21 Aug 2002 | v Finland | 3–0 | came on 87′ | 3 | — | — | Friendly |
| 16 May 2002 | v Nigeria | 1–2 | started | 90 | — | — | Friendly |
| 17 Apr 2002 | v United States | 2–1 | came on 46′ | 44 | — | — | Friendly |
| 27 Mar 2002 | v Denmark | 3–0 | started | 90 | — | — | Friendly |
| 13 Feb 2002 | v Russia | 2–0 | came on 85′ | 5 | — | — | Friendly |
Caps, goals and cards count what the sources record: line-ups from about 2003 (World Cups from 1970, friendlies from about 2016), and few scorers in older friendlies — so career totals run low.