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 | 9 | 5 | 1 | 3 | 9 | 7 | 55.6% |
| Without them | 5 | 1 | 2 | 2 | 4 | 5 | 20% |
| Aimo Diana | Italy | 1 |
| Alberto Gilardino | Italy | 1 |
| Alessandro Del Piero | Italy | 1 |
| Alessandro Nesta | Italy | 1 |
| Alexander Frei | Switzerland | 1 |
| Alexander Ostlund | Sweden | 1 |
| Alexandros Garpozis | Cyprus | 1 |
| Alonefits | Cyprus | 1 |
| Anders Svensson | Sweden | 1 |
| Andre Ooijer | Netherlands | 1 |
| Cyprus | 1 | 1 |
Finals and qualifying campaigns alike.
| 8 Oct 2005 | v Cyprus | 1–0 | 6′ | — | Winning goal | 1–0 | FIFA World Cup qualification 2005 |
In a recorded line-up, on the scoresheet or booked. “—” where the line-up isn't known.
| 2 Sep 2006 | v Germany | 0–1 | came on 79′ | 11 | — | — | UEFA Euro qualification 2006 |
| 16 Aug 2006 | v Netherlands | 0–4 | started | 90 | — | — | Friendly |
| 1 Mar 2006 | v Sweden | 3–0 | started, off 48′ | 48 | — | — | Friendly |
| 12 Oct 2005 | v Switzerland | 0–0 | came on 68′ | 22 | — | — | FIFA World Cup qualification 2005 |
| 8 Oct 2005 | v Cyprus | 1–0 | started | 90 | 1 | — | FIFA World Cup qualification 2005 |
| 17 Aug 2005 | v Italy | 1–2 | came on 74′ | 16 | — | — | Friendly |
| 8 Jun 2005 | v Faroe Islands | 2–0 | started | 90 | — | — | FIFA World Cup qualification 2005 |
| 29 Mar 2005 | v China PR | 1–0 | started, off 74′ | 74 | — | — | Friendly |
| 16 Nov 2004 | v Croatia | 1–0 | started, off 84′ | 84 | — | — | 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.