| Inns | HS |
| 250 | 42 | South Africa Under-19s v West Indies Under-19s | Fatullah Khan Saheb Osmani Stadium, Fatullah | 2003/04 |
| 239-8 | 46* | New Zealand Under-19s v West Indies Under-19s | Willowmoore Park Main Oval, Benoni | 2019/20 |
| 238-7 | 48 | Nepal Under-19s v New Zealand Under-19s | Khan Shaheb Osman Ali Stadium, Fatullah | 2015/16 |
| 236-8 | 48 | South Africa Under-19s v Australia Under-19s | Bert Sutcliffe Oval, Lincoln | 2001/02 |
| 235-8 | 46 | Zimbabwe Under-19s v Hong Kong Under-19s | McLean Park, Napier | 2009/10 |
| 233 | 49 | Pakistan Under-19s v England Under-19s | Supersport Centurion, Centurion | 1997/98 |
| 228-9 | 43 | England Under-19s v New Zealand Under-19s | Village Green, Christchurch | 2009/10 |
| 226-8 | 43 | New Zealand Under-19s v Sri Lanka Under-19s | Sharjah Cricket Association Stadium, Sharjah | 2013/14 |
| 225-8 | 37* | Ireland Under-19s v Afghanistan Under-19s | Cobham Oval (New), Whangarei | 2017/18 |
| 221 | 34 | Afghanistan Under-19s v Ireland Under-19s | Cobham Oval (New), Whangarei | 2017/18 |
| 220 | 44 | Kenya Under-19s v Namibia Under-19s | Air Force Ground, Katunayake | 1999/00 |
| 218-9 | 45 | Zimbabwe Under-19s v England Under-19s | Bangladesh Krira Shikkha Protisthan Ground, Savar | 2003/04 |
| 218-6 | 47 | England Under-19s v Bangladesh Under-19s | Endeavour Park No 2, Townsville | 2012 |
| 216-6 | 42* | West Indies Under-19s v Americas Under-19s | Kadirana Cricket Grounds, Gampaha | 1999/00 |
| 215 | 43 | West Indies Under-19s v India Under-19s | Kinrara Academy Oval, Kuala Lumpur | 2007/08 |
| 215 | 45 | India Under-19s v England Under-19s | Bert Sutcliffe Oval, Lincoln | 2009/10 |
| 215-9 | 42 | Afghanistan Under-19s v Pakistan Under-19s | Brian Lara Stadium, Tarouba | 2021/22 |
| 214 | 44 | Canada Under-19s v England Under-19s | Warner Park, Basseterre | 2021/22 |
| 213-7 | 49* | Bangladesh Under-19s v Canada Under-19s | Colin Maiden Park, Auckland | 2001/02 |
| 213 | 47 | New Zealand Under-19s v Sri Lanka Under-19s | Royal Selangor Club, Kuala Lumpur | 2007/08 |
| 212 | 37 | Ireland Under-19s v Papua New Guinea Under-19s | Khulna Divisional Stadium, Khulna | 2003/04 |
| 212 | 47 | Afghanistan Under-19s v Bangladesh Under-19s | Sheikh Zayed Stadium Nursery 2, Abu Dhabi | 2013/14 |
| 210 | 37 | Scotland Under-19s v Afghanistan Under-19s | Allan Border Field, Brisbane | 2012 |
| 209 | 48 | New Zealand Under-19s v England Under-19s | Bangabandhu National Stadium, Dhaka | 2003/04 |
| 207 | 42 | Zimbabwe Under-19s v Papua New Guinea Under-19s | Melville Park, Auckland | 2001/02 |
| 207-9 | 44 | Australia Under-19s v Pakistan Under-19s | Bert Sutcliffe Oval, Lincoln | 2009/10 |
| 206-6 | 43 | New Zealand Under-19s v Netherlands Under-19s | Uyanwatte Stadium, Matara | 1999/00 |
| 206 | 42 | Uganda Under-19s v Ireland Under-19s | MA Aziz Stadium, Chittagong | 2003/04 |
| 206 | 46 | Australia Under-19s v Nepal Under-19s | University Sains Malaysia, Penang | 2007/08 |
| 205-5 | 45 | Nepal Under-19s v Scotland Under-19s | Colin Maiden Park, Auckland | 2001/02 |
| 205 | 36 | West Indies Under-19s v Pakistan Under-19s | Bangabandhu National Stadium, Dhaka | 2003/04 |
| 205-7 | 45 | Pakistan Under-19s v England Under-19s | Dubai Sports City Stadium, Dubai | 2013/14 |
| 204-8 | 40* | New Zealand Under-19s v Bangladesh Under-19s | Bangabandhu National Stadium, Dhaka | 2003/04 |
| 202-9 | 44 | New Zealand Young Cricketers v West Indies Young Cricketers | Wentworth Oval, Wentworth | 1987/88 |
| 202 | 45 | Scotland Under-19s v Kenya Under-19s | Soweto Cricket Oval, Soweto | 1997/98 |
| 202-8 | 47 | England Under-19s v New Zealand Under-19s | Lincoln No 3, Lincoln | 2001/02 |
| 202 | 48 | Sri Lanka Under-19s v Afghanistan Under-19s | Cobham Oval (New), Whangarei | 2017/18 |
| 201 | 37 | Pakistan Young Cricketers v Australia Young Cricketers | Adelaide Oval, Adelaide | 1987/88 |
| 200 | 39 | Australia Under-19s v West Indies Under-19s | Carisbrook, Dunedin | 2001/02 |
