| # | Name | Score | Name | Score | Wk | Club | Date | Opposition | Ground | Grade | Runs |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | KJ O'Brien | 48 | PR Stirling | 95 | 1 | Ireland | 15-Jan-2020 | West Indies | St George's, Grenada | T20I | 154 |
| 2 | HT Tector | 38 | GR Adair | 48 | 2 | Ireland | 15-Jun-2025 | West Indies | Maghermason, Bready | T20I | 101 |
| 3 | LJ Tucker | 55 | HT Tector | 61 | 3 | Ireland | 17-Sep-2025 | England | Malahide | T20I | 123 |
| 4 | AD Poynter | 57 | KJ O'Brien | 42 | 4 | Ireland | 21-Mar-2014 | Netherlands | Sylhet | T20I | 101 |
| 5 | C Campher | 72 | GH Dockrell | 39 | 5 | Ireland | 19-Oct-2022 | Scotland | Bellerive Oval, Hobart | T20I | 119* |
| 6 | LJ Tucker | 78 | GH Dockrell | 43 | 6 | Ireland | 03-Aug-2022 | South Africa | Bristol | T20I | 86 |
| 7 | GH Dockrell | 34 | SW Poynter | 31 | 7 | Ireland | 21-Feb-2019 | Afghanistan | Rajiv Gandhi Stadium, De | T20I | 67* |
| 8 | F Hand | 36 | GH Dockrell | 58 | 8 | Ireland | 12-Aug-2022 | Afghanistan | Stormont, Belfast | T20I | 74 |
| 9 | GC Wilson | 41 | MC Sorensen | 12 | 9 | Ireland | 18-Jul-2012 | Bangladesh | Stormont, Belfast | T20I | 47* |
| 10 | BJ McCarthy | 30 | J Little | 15 | 10 | Ireland | 19-Jul-2021 | South Africa | Malahide | T20I | 44* |