Tallest: 4 · Year
By quarter-hour; stoppage time counts as the 45th or 90th minute.
Tallest: 3 · Minute
Republic of Ireland's matches with known line-ups from their first recorded cap to their last.
| With them | 11 | 7 | 2 | 2 | 17 | 10 | 63.6% |
| Without them | 32 | 15 | 12 | 5 | 40 | 22 | 46.9% |
| Adrian Aliaj | Albania | 1 |
| Albert Luque | Spain | 1 |
| Alexander Aas | Norway | 1 |
| Alexander Frei | Switzerland | 1 |
| Alexandros Garpozis | Cyprus | 1 |
| Allan Nielsen | Denmark | 1 |
| Alonefits | Cyprus | 1 |
| Altin Lala | Albania | 1 |
| Altin Rraklli | Albania | 1 |
| Andre Bergdolmo | Norway | 1 |
| Liechtenstein | 3 | 1 |
| Cyprus | 1 | 1 |
| Iceland | 1 | 1 |
| Turkey | 1 | 1 |
Finals and qualifying campaigns alike.
| 9 Sep 2003 | v Turkey | 2–2 | 35′ | — | Opening goal | 1–0 | Friendly |
| 6 Oct 2001 | v Cyprus | 4–0 | 63′ | — | Extended lead | 3–0 | FIFA World Cup qualification 2001 |
| 6 Sep 1997 | v Iceland | 4–2 | 13′ | — | Opening goal | 1–0 | FIFA World Cup qualification 1997 |
| 21 May 1997 | v Liechtenstein | 5–0 | 41′ | — | Extended lead | 3–0 | FIFA World Cup qualification 1997 |
| 21 May 1997 | v Liechtenstein | 5–0 | 34′ | — | Extended lead | 2–0 | FIFA World Cup qualification 1997 |
| 21 May 1997 | v Liechtenstein | 5–0 | 28′ | — | Winning goal | 1–0 | FIFA World Cup qualification 1997 |
In a recorded line-up, on the scoresheet or booked. “—” where the line-up isn't known.
| 8 Oct 2005 | v Cyprus | 1–0 | came on 88′ | 2 | — | — | FIFA World Cup qualification 2005 |
| 11 Oct 2003 | v Switzerland | 0–2 | started, off 58′ | 58 | — | — | UEFA Euro qualification 2003 |
| 9 Sep 2003 | v Turkey | 2–2 | started | 90 | 1 | — | Friendly |
| 19 Aug 2003 | v Australia | 2–1 | came on 43′ | 47 | — | — | Friendly |
| 7 Jun 2003 | v Albania | 2–1 | started, off 65′ | 65 | — | — | UEFA Euro qualification 2003 |
| 30 Apr 2003 | v Norway | 1–0 | started, off 74′ | 74 | — | — | Friendly |
| 12 Feb 2003 | v Scotland | 2–0 | came on 73′ | 17 | — | — | Friendly |
| 16 Jun 2002 | v Spain | 1–1 | came on 82′ | 38 | — | — | FIFA World Cup 2002 · Round of 16 |
| 16 May 2002 | v Nigeria | 1–2 | came on 61′ | 29 | — | — | Friendly |
| 17 Apr 2002 | v United States | 2–1 | came on 46′ | 44 | — | — | Friendly |
| 27 Mar 2002 | v Denmark | 3–0 | came on 76′ | 14 | — | — | Friendly |
| 6 Oct 2001 | v Cyprus | 4–0 | — | — | 1 | — | FIFA World Cup qualification 2001 |
| 6 Sep 1997 | v Iceland | 4–2 | — | — | 1 | — | FIFA World Cup qualification 1997 |
| 21 May 1997 | v Liechtenstein | 5–0 | — | — | 3 | — | FIFA World Cup qualification 1997 |
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.