| # | Name | Score | Name | Score | Wk | Club | Date | Opposition | Ground | Grade | Runs |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | AC Botha | 157 | EJG Morgan | 209 | 3 | Ireland | 10-Feb-2007 | UAE | Sheikh Zayed Abu Dhabi | 1stClas | 360 |
| 2 | EC Joyce | 205 | WTS Porterfield | 186 | 2 | Ireland | 24-Oct-2015 | Namibia | Wanderers CC Windhoek | 1stClas | 326 |
| 3 | JP Bray | 190 | NJ O'Brien | 176 | 2 | Ireland | 23-Oct-2005 | UAE | Wanderers CC Windhoek | 1stClas | 304 |
| 4 | AC Botha | 186 | AR Cusack | 130 | 6 | Ireland | 09-Aug-2007 | Scotland | Stormont, Belfast | 1stClas | 234 |
| 5 | PR Stirling | 146 | EC Joyce | 231 | 2 | Ireland | 02-Jun-2015 | UAE | Malahide | 1stClas | 231 |
| 6 | DA Lewis | 113 | GD Harrison | 105 | 4 | Ireland | 11-Jun-1994 | Scotland | Hamilton Cresc.Glasgow | 1stClas | 224* |
| 7 | IJ Anderson | 147 | AJ O'Riordan | 117 | 4 | Ireland | 07-Aug-1976 | Scotland | Hamilton Cresc.Glasgow | 1stClas | 222 |
| 8 | AC Botha | 122 | WTS Porterfield | 166 | 2 | Ireland | 23-Aug-2007 | Bermuda | Castle Avenue Dublin | 1stClas | 221 |
| 9 | JF Mooney | 107 | AR White | 144 | 6 | Ireland | 11-Aug-2010 | Netherlands | Rathmines Dublin | 1stClas | 221 |
| 10 | KJ O'Brien | 171 | AR White | 92 | 5 | Ireland | 11-Oct-2008 | Kenya | Gymkhana, Nairobi | 1stClas | 214* |
| 11 | JP Bray | 146 | WTS Porterfield | 54 | 1 | Ireland | 22-May-2007 | Canada | Grace Road Leics | 1stClas | 202 |
| 12 | J Anderson | 74 | A Balbirnie | 205 | 3 | Ireland | 15-Aug-2017 | Netherlands | Malahide | 1stClas | 183 |
| 13 | JP Bray | 89 | PR Stirling | 100 | 1 | Ireland | 03-Jul-2009 | Kenya | Eglinton Londonderry | 1stClas | 182 |
| 14 | EC Joyce | 155 | NJ O'Brien | 126 | 3 | Ireland | 12-Mar-2013 | UAE | Sharjah Cricket Associat | 1stClas | 181 |
| 15 | RJH Lambert | 81 | Sir TC O'Brien | 167 | 3 | Ireland | 26-May-1902 | Oxford University | Oxford | 1stClas | 170 |
| 16 | AC Botha | 78 | NJ O'Brien | 106 | 4 | Ireland | 27-Oct-2005 | Kenya | Wanderers CC Windhoek | 1stClas | 165 |
| 17 | DT Johnston | 69 | NJ O'Brien | 174 | 7 | Ireland | 06-Mar-2008 | UAE | Sheikh Zayed Abu Dhabi | 1stClas | 163 |
| 18 | MR Adair | 88 | AR McBrine | 86 | 7 | Ireland | 01-Jun-2023 | England | Lord's | Test | 163 |
| 19 | KJ O'Brien | 79 | AC Botha | 172 | 4 | Ireland | 09-Jul-2008 | Netherlands | Hazelaarweg Rotterdam | 1stClas | 159 |
| 20 | JP Bray | 135 | AC Botha | 97 | 2 | Ireland | 23-Aug-2005 | Netherlands | Stormont, Belfast | 1stClas | 158 |