| Inns | HS |
| 248-8 | 69 | Canada Under-19s v South Africa Under-19s | Sheikh Zayed Stadium Nursery 1, Abu Dhabi | 2013/14 |
| 240 | 66 | Canada Under-19s v Namibia Under-19s | ICC Cricket Academy Ground No 2, Dubai | 2013/14 |
| 235 | 96 | Canada Under-19s v United Arab Emirates Under-19s | Conaree Sports Club, Conaree | 2021/22 |
| 231 | 65 | Canada Under-19s v Uganda Under-19s | MA Aziz Stadium, Chittagong | 2003/04 |
| 231-8 | 90 | Canada Under-19s v United Arab Emirates Under-19s | Mangaung Outdoor Centre, Bloemfontein | 2019/20 |
| 226 | 62 | Canada Under-19s v West Indies Under-19s | Sheikh Zayed Stadium Nursery 1, Abu Dhabi | 2013/14 |
| 214 | 44 | Canada Under-19s v England Under-19s | Warner Park, Basseterre | 2021/22 |
| 213-9 | 82* | Canada Under-19s v Bangladesh Under-19s | Colin Maiden Park, Auckland | 2001/02 |
| 201-7 | 90 | Canada Under-19s v Zimbabwe Under-19s | Village Green, Christchurch | 2009/10 |
| 199 | 62* | Canada Under-19s v South Africa Under-19s | Senwes Park, Potchefstroom | 2019/20 |
| 198 | 63 | Canada Under-19s v Bangladesh Under-19s | Bert Sutcliffe Oval, Lincoln | 2017/18 |
| 197-6 | 72 | Canada Under-19s v Namibia Under-19s | Bert Sutcliffe Oval, Lincoln | 2017/18 |
| 192-9 | 56 | Canada Under-19s v Zimbabwe Under-19s | Sheikh Zayed Stadium Nursery 1, Abu Dhabi | 2013/14 |
| 186-8 | 37 | Canada Under-19s v Zimbabwe Under-19s | Sheikh Kamal International Cricket Stadium No 2 Ground, Cox's Bazar | 2015/16 |
| 180-9 | 63 | Canada Under-19s v Zimbabwe Under-19s | Shaheed Chandu Stadium, Bogra | 2003/04 |
| 179-6 | 42* | Canada Under-19s v United Arab Emirates Under-19s | Witrand Cricket Field, Potchefstroom | 2019/20 |
| 178 | 51 | Canada Under-19s v Pakistan Under-19s | Sylhet District Stadium, Sylhet | 2015/16 |
| 176 | 26* | Canada Under-19s v Zimbabwe Under-19s | North West University No 2 Ground, Potchefstroom | 2019/20 |
| 169 | 77 | Canada Under-19s v Papua New Guinea Under-19s | Sheikh Zayed Stadium Nursery 2, Abu Dhabi | 2013/14 |
| 164 | 50 | Canada Under-19s v Australia Under-19s | Bir Shrestha Shahid Captain Mohiuddin Jahangir Stadium, Rajshahi | 2003/04 |
| 157 | 49* | Canada Under-19s v Scotland Under-19s | Melville Park, Auckland | 2001/02 |
| 147 | 38 | Canada Under-19s v Afghanistan Under-19s | Sylhet Stadium, Sylhet | 2015/16 |
| 146-8 | 38 | Canada Under-19s v Papua New Guinea Under-19s | Nelson Park, Napier | 2009/10 |
| 142 | 69 | Canada Under-19s v Sri Lanka Under-19s | Lincoln No 3, Lincoln | 2009/10 |
| 139 | 47 | Canada Under-19s v Ireland Under-19s | Sheikh Kamal International Cricket Stadium, Cox's Bazar | 2015/16 |
| 136 | 42 | Canada Under-19s v Bangladesh Under-19s | Chittagong Divisional Stadium, Chittagong | 2003/04 |
| 136 | 61 | Canada Under-19s v West Indies Under-19s | Bert Sutcliffe Oval, Lincoln | 2017/18 |
| 136 | 63 | Canada Under-19s v Bangladesh Under-19s | Conaree Sports Club, Conaree | 2021/22 |
| 134 | 60 | Canada Under-19s v Zimbabwe Under-19s | MainPower Oval, Rangiora | 2017/18 |
| 128 | 26 | Canada Under-19s v New Zealand Under-19s | Lincoln No 3, Lincoln | 2009/10 |
