| Inns | HS |
| 286 | 43 | Ireland v England | Trent Bridge, Nottingham | 2023 |
| 250 | 44 | Ireland v Zimbabwe | Harare Sports Club, Harare | 2024/25 |
| 200 | 46 | Ireland v Kenya | Mombasa Sports Club Ground, Mombasa | 2011/12 |
| 198 | 39 | Ireland v Australia | Sahara Park Willowmoore, Benoni | 2016/17 |
| 198 | 33 | Ireland v England | The Village, Malahide, Dublin | 2019 |
| 192 | 39 | Ireland v Australia | Castle Avenue, Dublin | 2010 |
| 192 | 39 | Ireland v Sri Lanka | Queens Sports Club, Bulawayo | 2023 |
| 185-7 | 38 | Ireland v Bangladesh | Shere Bangla National Stadium, Mirpur | 2007/08 |
| 183-8 | 41 | Ireland v West Indies | Sabina Park, Kingston | 2006/07 |
| 181 | 46 | Ireland v Bangladesh | The Village, Malahide, Dublin | 2017 |
| 180 | 31 | Ireland v West Indies | Kensington Oval, Bridgetown | 2019/20 |
| 178 | 38 | Ireland v Bangladesh | Shere Bangla National Stadium, Mirpur | 2010/11 |
| 175-9 | 47 | Ireland v Canada | Armour Heights, Toronto | 2010 |
| 175 | 36 | Ireland v Afghanistan | Dubai Sports City Stadium, Dubai | 2014/15 |
| 169 | 29* | Ireland v South Africa | Sheikh Zayed Stadium, Abu Dhabi | 2024 |
| 165 | 48 | Ireland v West Indies | Castle Avenue, Dublin | 2025 |
| 162 | 34 | Ireland v Bangladesh | Shere Bangla National Stadium, Mirpur | 2007/08 |
| 157 | 45 | Ireland v Australia | Civil Service Cricket Club, Stormont, Belfast | 2015 |
| 155-5 | 44* | Ireland v Canada | VRA Ground, Amstelveen | 2010 |
| 155 | 45 | Ireland v Bangladesh | Sylhet Stadium, Sylhet | 2022/23 |
| 154 | 48 | Ireland v New Zealand | The Village, Malahide, Dublin | 2017 |
| 152-8 | 30 | Ireland v South Africa | Guyana National Stadium, Providence | 2006/07 |
| 150 | 34 | Ireland v Afghanistan | Civil Service Cricket Club, Stormont, Belfast | 2016 |
| 148-9 | 33 | Ireland v Kenya | Civil Service Cricket Club, Stormont, Belfast | 2008 |
| 148 | 41 | Ireland v South Africa | Sahara Park Willowmoore, Benoni | 2016/17 |
| 147 | 38 | Ireland v Zimbabwe | Gymkhana Club Ground, Nairobi | 2008/09 |
| 141 | 31 | Ireland v South Africa | Eden Gardens, Kolkata | 2010/11 |
| 140 | 37 | Ireland v Sri Lanka | Castle Avenue, Dublin | 2014 |
| 134 | 49 | Ireland v New Zealand | Guyana National Stadium, Providence | 2006/07 |
| 132 | 21 | Ireland v South Africa | Sheikh Zayed Stadium, Abu Dhabi | 2024 |
