| # | Name | Score | Name | Score | Wk | Club | Date | Opposition | Ground | Grade | Runs |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | C Currie | 91 | A Poynter | 195 | 3 | Clontar | 29-Jun-2014 | St Johnston | Castle Avenue | BKISC | 296* |
| 2 | S Dyer | 130 | NG Jones | 124 | 2 | CSN | 08-May-2010 | Cork County | Stormont | HKBKISC | 259 |
| 3 | Brenton Parchment | 171 | EJ Richardson | 120 | 4 | NCounty | 06-Jun-2015 | Bready | Inch | BKISC | 251* |
| 4 | James Hall | 108 | WK McCallan | 145 | 1 | Warings | 08-May-2010 | Old Belvedere | Cabra | HKBKISC | 242 |
| 5 | JP Bray | 141 | D Ford | 96 | 2 | Phoenix | 05-Jul-2003 | Limavady | Phoenix Park | Royal L | 237 |
| 6 | Nikolai Smith | 106 | Oliver Metcalfe | 123 | 1 | Instoni | 25-May-2019 | Cork County | Shaws Bridge | CCBKISC | 236* |
| 7 | R Simpson | 103 | RJ Rankin | 128 | 2 | Lisburn | 09-May-2015 | Glendermott | The Rectory | BKISC | 225* |
| 8 | A Dennison | 105 | James Hall | 175 | 1 | Warings | 22-Jul-2018 | Pembroke | Sydney Parade | CCBKISC | 221 |
| 9 | T Fisher | 127 | C Mullen | 119 | 2 | Railway | 11-Jun-2011 | Eglinton | Park Avenue | HKBKISC | 212 |
| 10 | M Collier | 58 | B Coghlan | 157 | 1 | Clontar | 08-Jun-2014 | Fox Lodge | Ballymagorry | BKISC | 209 |
| 11 | Diarmaid Tucker | 93 | Fiachra Tucker | 116 | 1 | Pembrok | 17-Jun-2018 | North Down | The Green, Comber | CCBKISC | 207 |
| 12 | D van Zyl | 104 | FP McAllister | 150 | 1 | Rush | 17-May-2008 | Lisburn | Kenure | HKBKISC | 203 |
| 13 | Des (Decker) Curry | 101 | AN Murphy | 97 | 4 | Ardmore | 08-Jun-2014 | Merrion | Anglesea Road | BKISC | 202 |
| 14 | A Balbirnie | 90 | Nick Cutler | 110 | 2 | Pembrok | 18-Jun-2017 | Bready | Sydney Parade | BKISC | 199* |
| 15 | JP Bray | 109 | PJ Byrne | 62 | 1 | The Hil | 28-Jul-2007 | Malahide | Milverton | HKBKISC | 193* |
| 16 | D Barr | 57 | H von Rauenstein | 194 | 2 | Glender | 12-Jun-2010 | Civil Service North | The Rectory | HKBKISC | 193 |
| 17 | NG Jones | 112 | G Nieuwoudt | 90 | 2 | CSN | 27-May-2012 | Phoenix | Stormont | HKBKISC | 193 |
| 18 | Shahid Iqbal | 106 | Naseer Shoukat | 106 | 4 | Rush | 09-May-2009 | North Down | Kenure | HKBKISC | 191 |
| 19 | M Lewis | 86 | Jamie Brown | 124 | 3 | Merrion | 11-Jun-2017 | Muckamore | Anglesea Road | BKISC | 190 |
| 20 | R McCann | 90 | D Jacobs | 91 | 2 | Instoni | 08-May-2010 | Brigade | Beechgrove | HKBKISC | 184* |