| # | Name | Score | Name | Score | Wk | Club | Date | Opposition | Ground | Grade | Runs |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | MP Rea | 106 | SJS Warke | 113 | 1 | Ireland | 26-Jul-1992 | Wales | College Park Dublin | 3 Day | 224 |
| 2 | EC Joyce | 205 | WTS Porterfield | 186 | 2 | Ireland | 24-Oct-2015 | Namibia | Wanderers CC Windhoek | 1stClas | 326 |
| 3 | AC Botha | 157 | EJG Morgan | 209 | 3 | Ireland | 10-Feb-2007 | UAE | Sheikh Zayed Abu Dhabi | 1stClas | 360 |
| 4 | KJ O'Brien | 142 | WTS Porterfield | 104 | 4 | Ireland | 02-Feb-2007 | Kenya | Ruaraka, Nairobi | ODI | 227 |
| 5 | KJ O'Brien | 171 | AR White | 92 | 5 | Ireland | 11-Oct-2008 | Kenya | Gymkhana, Nairobi | 1stClas | 214* |
| 6 | AC Botha | 186 | AR Cusack | 130 | 6 | Ireland | 09-Aug-2007 | Scotland | Stormont, Belfast | 1stClas | 234 |
| 7 | DT Johnston | 69 | NJ O'Brien | 174 | 7 | Ireland | 06-Mar-2008 | UAE | Sheikh Zayed Abu Dhabi | 1stClas | 163 |
| 8 | MR Adair | 88 | AR McBrine | 86 | 7 | Ireland | 01-Jun-2023 | England | Lord's | Test | 163 |
| 9 | SC Corlett | 53 | A McBrine | 102 | 8 | Ireland | 18-Jul-1987 | Scotland | Coleraine | 1stClas | 150 |
| 10 | WD Hamilton | 62 | JW Hynes | 31 | 9 | Ireland | 14-Jul-1887 | Canada | Rathmines Dublin | 3 Day | 96 |
| 11 | JO Davy | 51 | P McCrum | 44 | 10 | Ireland | 09-Aug-1997 | Scotland | Malahide | 1stClas | 100* |