| 239* | NVH Riches | Wales v Ireland | Ormeau, Belfast | 1926 |
| 231 | EC Joyce | Ireland v United Arab Emirates | The Village, Malahide, Dublin | 2015 |
| 207 | WTS Porterfield | North West v Leinster Cricket Union | Magheramason, Bready | 2018 |
| 205* | A Balbirnie | Ireland v Netherlands | The Village, Malahide, Dublin | 2017 |
| 190* | J Aitchison | Scotland v Ireland | College Park, Dublin | 1959 |
| 186 | AC Botha | Ireland v Scotland | Civil Service Cricket Club, Stormont, Belfast | 2007 |
| 178* | J Kerr | Scotland v Ireland | College Park, Dublin | 1923 |
| 167* | EC Joyce | Leinster Cricket Union v Northern Cricket Union | Castle Avenue, Dublin | 2017 |
| 166 | WTS Porterfield | Ireland v Bermuda | Castle Avenue, Dublin | 2007 |
| 165 | NJ O'Brien | North West v Leinster Cricket Union | Sydney Parade, Dublin | 2018 |
| 156 | EC Joyce | Leinster Cricket Union v North West | Oak Hill Cricket Club, Oak Hill | 2017 |
| 149 | D Denton | Yorkshire v Ireland | Woodbrook Cricket Club Ground, Bray | 1907 |
| 148 | SR Thompson | North West v Leinster Cricket Union | Sydney Parade, Dublin | 2018 |
| 146 | PR Stirling | Ireland v United Arab Emirates | The Village, Malahide, Dublin | 2015 |
| 144* | SJS Warke | Ireland v Scotland | Castle Avenue, Dublin | 1985 |
| 144 | AR White | Ireland v Netherlands | Observatory Lane, Rathmines, Dublin | 2010 |
| 143* | W Bardsley | Australians v SH Cochrane's XI | Woodbrook Cricket Club Ground, Bray | 1909 |
| 141 | RC Blunt | Marylebone Cricket Club v Ireland | College Park, Dublin | 1934 |
| 140* | JNK Shannon | Northern Cricket Union v Leinster Cricket Union | Civil Service Cricket Club, Stormont, Belfast | 2017 |
| 137 | SF Bergin | Ireland v Scotland | College Park, Dublin | 1959 |
| 136 | J Kerr | Scotland v Ireland | College Park, Dublin | 1927 |
| 135 | JP Bray | Ireland v Netherlands | Civil Service Cricket Club, Stormont, Belfast | 2005 |
| 133 | RES Wyatt | Marylebone Cricket Club v Ireland | Observatory Lane, Rathmines, Dublin | 1948 |
| 133 | SPD Smith | Australia A v Ireland | Civil Service Cricket Club, Stormont, Belfast | 2013 |
| 131 | LJ Tancred | South Africans v Woodbrook Club and Ground | Woodbrook Cricket Club Ground, Bray | 1912 |
| 130 | AP Gwynn | Dublin University v Cambridge University | College Park, Dublin | 1895 |
| 130 | AR Cusack | Ireland v Scotland | Civil Service Cricket Club, Stormont, Belfast | 2007 |
| 129 | WG Druce | Cambridge University v Dublin University | College Park, Dublin | 1895 |
| 129 | JS Pollock | Ireland v Scotland | College Park, Dublin | 1951 |
| 128 | HH Marriott | Cambridge University v Dublin University | College Park, Dublin | 1895 |