| Inns | HS |
| 331-6 | 74 | Ireland v Scotland | ICC Cricket Academy Ground, Dubai | 2017/18 |
| 328-6 | 88 | Ireland v Canada | Castle Avenue, Dublin | 2011 |
| 307-6 | 92 | Ireland v West Indies | Saxton Oval, Nelson | 2014/15 |
| 304 | 95 | Ireland v Afghanistan | Greater Noida Sports Complex Ground, Greater Noida | 2016/17 |
| 294-7 | 84 | Ireland v Zimbabwe | Harare Sports Club, Harare | 2022/23 |
| 286 | 43 | Ireland v England | Trent Bridge, Nottingham | 2023 |
| 285-6 | 83 | Ireland v Kenya | Gymkhana Club Ground, Nairobi | 2008/09 |
| 284-9 | 88 | Ireland v South Africa | Sheikh Zayed Stadium, Abu Dhabi | 2024 |
| 282-8 | 67 | Ireland v Zimbabwe | Civil Service Cricket Club, Stormont, Belfast | 2021 |
| 281-7 | 91* | Ireland v Oman | Bulawayo Athletic Club, Bulawayo | 2023 |
| 279-8 | 80 | Ireland v United Arab Emirates | Brisbane Cricket Ground, Woolloongabba, Brisbane | 2014/15 |
| 274 | 56 | Ireland v Netherlands | Cambusdoon New Ground, Alloway | 2006 |
| 271-9 | 82 | Ireland v Afghanistan | Sharjah Cricket Association Stadium, Sharjah | 2017/18 |
| 271-9 | 83 | Ireland v Afghanistan | Sheikh Zayed Stadium, Abu Dhabi | 2020/21 |
| 269-9 | 60 | Ireland v Bangladesh | The Cloud County Ground, Chelmsford | 2023 |
| 269-8 | 62 | Ireland v Nepal | Takashinga Sports Club, Highfield, Harare | 2023 |
| 268-5 | 96* | Ireland v Netherlands | VRA Ground, Amstelveen | 2013 |
| 268-7 | 72 | Ireland v Zimbabwe | Harare Sports Club, Harare | 2015/16 |
| 265-4 | 99 | Ireland v Afghanistan | Greater Noida Sports Complex Ground, Greater Noida | 2016/17 |
| 263-9 | 52 | Ireland v England | Civil Service Cricket Club, Stormont, Belfast | 2006 |
| 259 | 75 | Ireland v India | Seddon Park, Hamilton | 2014/15 |
| 256-7 | 84 | Ireland v Kenya | Castle Avenue, Dublin | 2009 |
| 254-8 | 94 | Ireland v Netherlands | Gymkhana Club Ground, Nairobi | 2006/07 |
| 250 | 44 | Ireland v Zimbabwe | Harare Sports Club, Harare | 2024/25 |
| 249-7 | 53 | Ireland v Canada | Castle Avenue, Dublin | 2011 |
| 249-4 | 89 | Ireland v Zimbabwe | Harare Sports Club, Harare | 2024/25 |
| 245 | 71 | Ireland v West Indies | Sabina Park, Kingston | 2021/22 |
| 244 | 55 | Ireland v Zimbabwe | Harare Sports Club, Harare | 2010/11 |
| 243-7 | 85 | Ireland v Bangladesh | Kensington Oval, Bridgetown | 2006/07 |
| 243 | 82 | Ireland v England | Lord's Cricket Ground, St John's Wood | 2017 |
