| Inns | HS |
| 372-7 | 76 | England Under-19s v Ireland Under-19s | Haslegrave Ground, Loughborough | 2023 |
| 354-8 | 90 | Zimbabwe Under-19s v Scotland Under-19s | De Beers Diamond Oval, Kimberley | 2019/20 |
| 341-8 | 89 | Pakistan Under-19s v South Africa Under-19s | City Oval, Pietermaritzburg | 2019 |
| 340-5 | 91 | Australia Under-19s v Ireland Under-19s | MA Aziz Stadium, Chittagong | 2003/04 |
| 340-8 | 74 | India Under-19s v West Indies Under-19s | Sharjah Cricket Association Stadium, Sharjah | 2013/14 |
| 337-8 | 86 | South Africa Under-19s v Scotland Under-19s | Nondescripts Cricket Club Ground, Colombo | 2005/06 |
| 333-5 | 90* | Ireland Under-19s v England Under-19s | Haslegrave Ground, Loughborough | 2023 |
| 330 | 64 | Sri Lanka Under-19s v England Under-19s | The 1st Central County Ground, Hove | 2024 |
| 328-7 | 94 | India Under-19s v Australia Under-19s | Bay Oval, Mount Maunganui | 2017/18 |
| 325-6 | 79 | Sri Lanka Under-19s v England Under-19s | Colts Cricket Club Ground, Colombo | 2010/11 |
| 324-7 | 97 | India Under-19s v Sri Lanka Under-19s | Kinrara Academy Oval, Kuala Lumpur | 2006/07 |
| 324-8 | 77 | India Under-19s v Australia Under-19s | Cricket Association Puducherry Siechem Ground, Puducherry | 2024/25 |
| 320-7 | 93 | England Under-19s v Canada Under-19s | Warner Park, Basseterre | 2021/22 |
| 320-9 | 86 | Bangladesh Under-19s v South Africa Under-19s | Willowmoore Park Main Oval, Benoni | 2025 |
| 319-8 | 66 | Australia Under-19s v West Indies Under-19s | Willowmoore Park Main Oval, Benoni | 2019/20 |
| 317-8 | 81 | Australia Under-19s v India Under-19s | Indian Petrochemicals Corporation Limited Sports Complex Ground, Vadodara | 1993/94 |
| 316-8 | 71 | Bangladesh Under-19s v New Zealand Under-19s | Bert Sutcliffe Oval, Lincoln | 2019/20 |
| 315-4 | 81* | India Under-19s v West Indies Under-19s | Port Trust Golden Jubilee Stadium, Visakhapatnam | 2011/12 |
| 315-8 | 93 | England Under-19s v United Arab Emirates Under-19s | Sheikh Zayed Stadium, Abu Dhabi | 2013/14 |
| 315-6 | 76 | Sri Lanka Under-19s v Canada Under-19s | Sylhet District Stadium, Sylhet | 2015/16 |
| 315-8 | 98 | England Under-19s v Sri Lanka Under-19s | The Essex County Ground, Chelmsford | 2016 |
| 314-7 | 54 | Pakistan Under-19s v Sri Lanka Under-19s | National Stadium, Karachi | 2004/05 |
| 312-6 | 98 | Pakistan Under-19s v Australia Under-19s | Roy Henzell Oval, Caloundra | 2006/07 |
| 311 | 66 | Pakistan Under-19s v Australia Under-19s | ICC Cricket Academy Ground No 2, Dubai | 2015/16 |
| 310-8 | 95 | New Zealand Under-19s v Pakistan Under-19s | Molyneux Park, Alexandra | 1994/95 |
| 310-9 | 92 | Australia Under-19s v Pakistan Under-19s | Roy Henzell Oval, Caloundra | 2006/07 |
| 309-6 | 69 | Afghanistan Under-19s v New Zealand Under-19s | Hagley Oval, Christchurch | 2017/18 |
| 309 | 66 | Bangladesh Under-19s v England Under-19s | Chukkapalli Pitchaiah Cricket Ground, Mulapadu | 2023/24 |
| 307-6 | 69 | West Indies Under-19s v Denmark Under-19s | St Alban's College Ground, Pretoria | 1997/98 |
| 307-8 | 81 | Bangladesh Under-19s v Ireland Under-19s | McLean Park, Napier | 2009/10 |
| 307-5 | 88 | India Under-19s v Ireland Under-19s | Brian Lara Stadium, Tarouba | 2021/22 |
| 305-5 | 90* | Denmark Under-19s v Namibia Under-19s | New Wanderers No 3 Oval, Johannesburg | 1997/98 |
| 305-7 | 92 | New Zealand Under-19s v Ireland Under-19s | R Premadasa Stadium, Colombo | 2005/06 |
| 305-5 | 75 | Pakistan Under-19s v Zimbabwe Under-19s | Bridge House School, Franschhoek | 2011/12 |
| 304-7 | 87 | India Under-19s v South Africa Under-19s | Karnail Singh Stadium, Delhi | 1995/96 |
| 304-9 | 58 | South Africa Under-19s v England Under-19s | County Ground, Taunton | 2011 |
| 304-3 | 85 | India Under-19s v Sri Lanka Under-19s | Shere Bangla National Stadium, Mirpur | 2018/19 |
| 303-8 | 68 | West Indies Under-19s v Nigeria Under-19s | Country Club B Field, Kimberley | 2019/20 |
| 303 | 79 | Pakistan Under-19s v Afghanistan Under-19s | ICC Cricket Academy Ground, Dubai | 2023/24 |
| 303-6 | 75 | South Africa Under-19s v Zimbabwe Under-19s | Harare Sports Club, Harare | 2025 |
| 301-5 | 76 | India Under-19s v Sri Lanka Under-19s | Rangiri Dambulla International Stadium, Dambulla | 2013 |
| 301-6 | 85 | India Under-19s v Papua New Guinea Under-19s | Sharjah Cricket Association Stadium, Sharjah | 2013/14 |
| 300-5 | 72 | England Under-19s v South Africa Under-19s | County Ground, Taunton | 2011 |
| 300 | 71 | India Under-19s v Australia Under-19s | Ian Healy Oval, Brisbane | 2025/26 |
| 299-9 | 51 | India Under-19s v England Under-19s | Maharaja Bir Bikram College Stadium, Agartala | 2004/05 |
| 299-8 | 85 | South Africa Under-19s v United Arab Emirates Under-19s | Mangaung Outdoor Centre, Bloemfontein | 2019/20 |
| 298-9 | 88 | India Under-19s v Pakistan Under-19s | Bagh-e-Jinnah, Lahore | 2006/07 |
| 298-9 | 69 | Sri Lanka Under-19s v Namibia Under-19s | Allan Border Field, Brisbane | 2012 |
| 298 | 88 | Afghanistan Under-19s v Sri Lanka Under-19s | Tolerance Oval, Abu Dhabi | 2022/23 |
| 298-8 | 77 | England Under-19s v Ireland Under-19s | Haslegrave Ground, Loughborough | 2024 |
| 297-9 | 79 | Sri Lanka Under-19s v Australia Under-19s | P Sara Oval, Colombo | 2018/19 |
| 297-4 | 59 | India Under-19s v Sri Lanka Under-19s | Mangaung Outdoor Centre, Bloemfontein | 2019/20 |
| 296-6 | 76 | New Zealand Under-19s v Bangladesh Under-19s | Bert Sutcliffe Oval, Lincoln | 2019/20 |
| 296-7 | 89 | Australia Under-19s v Zimbabwe Under-19s | De Beers Diamond Oval, Kimberley | 2023/24 |
| 295 | 63 | Pakistan Under-19s v India Under-19s | Eden Gardens, Calcutta | 1989/90 |
| 295 | 45 | Australia Under-19s v Pakistan Under-19s | Mirpur Cricket Stadium, Mirpur | 2007/08 |
| 295-8 | 73 | Bangladesh Under-19s v New Zealand Under-19s | Bert Sutcliffe Oval, Lincoln | 2019/20 |
| 294-8 | 95 | South Africa Under-19s v Bangladesh Under-19s | Allan Border Field, Brisbane | 2012 |
| 294-9 | 81 | Pakistan Under-19s v Zimbabwe Under-19s | Witrand Cricket Field, Potchefstroom | 2019/20 |
| 294-6 | 58* | Sri Lanka Under-19s v England Under-19s | The Cloud County Ground, Chelmsford | 2024 |
| 293-8 | 79 | Sri Lanka Under-19s v South Africa Under-19s | Bert Sutcliffe Oval, Lincoln | 2009/10 |
| 293-9 | 65 | South Africa Under-19s v Zimbabwe Under-19s | Bridge House School, Franschhoek | 2010/11 |
| 293-9 | 82 | Sri Lanka Under-19s v Pakistan Under-19s | National Bank of Pakistan Sports Complex, Karachi | 2023/24 |
| 292-8 | 84 | Pakistan Under-19s v Ireland Under-19s | Avion Park Cricket Club, Kempton Park | 1997/98 |
| 291 | 75 | Pakistan Under-19s v Australia Under-19s | Gaddafi Stadium, Lahore | 1996/97 |
| 291-7 | 65 | Zimbabwe Under-19s v Kenya Under-19s | Eden Park Outer Oval, Auckland | 2001/02 |
| 291-9 | 65 | Ireland Under-19s v Australia Under-19s | MA Aziz Stadium, Chittagong | 2003/04 |
| 291-6 | 94 | Sri Lanka Under-19s v West Indies Under-19s | Village Green, Christchurch | 2009/10 |
| 291-6 | 83* | India Under-19s v Zimbabwe Under-19s | Dr YS Rajasekhara Reddy ACA-VDCA Cricket Stadium, Visakhapatnam | 2013/14 |
| 291-7 | 76* | India Under-19s v Sri Lanka Under-19s | ICC Cricket Academy Ground, Dubai | 2013/14 |
| 290 | 49 | India Under-19s v England Under-19s | County Ground, Northampton | 2025 |
| 289-6 | 62 | Australia Under-19s v Pakistan Under-19s | Albert Ground, Melbourne | 1997/98 |
| 289-4 | 93 | West Indies Under-19s v Canada Under-19s | Sheikh Zayed Stadium Nursery 1, Abu Dhabi | 2013/14 |
| 289-5 | 91 | England Under-19s v South Africa Under-19s | Senwes Park, Potchefstroom | 2017/18 |
| 289-9 | 69 | England Under-19s v West Indies Under-19s | The Kent County Cricket Ground, Beckenham | 2021 |
| 289-7 | 95 | West Indies Under-19s v Sri Lanka Under-19s | Sir Vivian Richards Stadium, North Sound | 2025 |
| 288-8 | 77 | India Under-19s v Australia Under-19s | Municipal Stadium, Rajkot | 1993/94 |
| 288-6 | 72* | Australia Under-19s v Pakistan Under-19s | Deakin Reserve, Shepparton | 1997/98 |
| 288-8 | 75 | Sri Lanka Under-19s v England Under-19s | Bangladesh Krira Shikkha Protisthan Ground, Savar | 2005/06 |
| 287-9 | 84 | Pakistan Under-19s v Australia Under-19s | R Premadasa Stadium, Colombo | 2005/06 |
| 287-8 | 75 | India Under-19s v England Under-19s | Brabourne Stadium, Mumbai | 2016/17 |
| 287-6 | 88 | Sri Lanka Under-19s v West Indies Under-19s | Sir Vivian Richards Stadium, North Sound | 2025 |
| 286-5 | 98 | England Under-19s v Sri Lanka Under-19s | Bangladesh Krira Shikkha Protisthan Ground, Savar | 2005/06 |
| 286-8 | 95 | Bangladesh Under-19s v West Indies Under-19s | Guyana National Stadium, Providence | 2013/14 |
| 286-9 | 90 | England Under-19s v Zimbabwe Under-19s | De Beers Diamond Oval, Kimberley | 2019/20 |
| 285-9 | 76 | Australia Under-19s v New Zealand Under-19s | Endeavour Park, Townsville | 2011/12 |
| 285-9 | 65 | South Africa Under-19s v West Indies Under-19s | JB Marks Cricket Oval, Potchefstroom | 2023/24 |
| 285-6 | 70 | Bangladesh Under-19s v South Africa Under-19s | Willowmoore Park Main Oval, Benoni | 2025 |
| 284-9 | 97 | India Under-19s v West Indies Under-19s | R Premadasa Stadium, Colombo | 2005/06 |
| 284-7 | 86 | Afghanistan Under-19s v Sri Lanka Under-19s | Cobham Oval (New), Whangarei | 2017/18 |
| 284-7 | 73 | United Arab Emirates Under-19s v Canada Under-19s | Conaree Sports Club, Conaree | 2021/22 |
| 284-6 | 77 | Bangladesh Under-19s v Zimbabwe Under-19s | Harare Sports Club, Harare | 2025 |
| 284-7 | 96 | Bangladesh Under-19s v Afghanistan Under-19s | ICC Cricket Academy Ground, Dubai | 2025/26 |
| 283-8 | 68 | Australia Under-19s v India Under-19s | Municipal Stadium, Rajkot | 1993/94 |
| 283-8 | 88 | Pakistan Under-19s v Papua New Guinea Under-19s | ICC Cricket Academy Ground, Dubai | 2013/14 |
| 282-7 | 59 | England Under-19s v West Indies Under-19s | Zohur Ahmed Chowdhury Stadium, Chittagong | 2015/16 |
| 282-8 | 99* | South Africa Under-19s v West Indies Under-19s | Bay Oval, Mount Maunganui | 2017/18 |
| 282 | 74 | Pakistan Under-19s v South Africa Under-19s | Chatsworth Stadium, Chatsworth | 2019 |
| 281-5 | 69* | Australia Under-19s v England Under-19s | Hagley Oval, Christchurch | 2001/02 |
| 281-7 | 80* | India Under-19s v Pakistan Under-19s | Andhra Cricket Association-Visakhapatnam District Cricket Association Stadium, Visakhapatnam | 2005/06 |
| 281-9 | 77 | New Zealand Under-19s v Australia Under-19s | Endeavour Park, Townsville | 2011/12 |
| 281-9 | 98 | Bangladesh Under-19s v Sri Lanka Under-19s | Shere Bangla National Stadium, Mirpur | 2013 |
| 281-6 | 55* | West Indies Under-19s v Ireland Under-19s | Bert Sutcliffe Oval, Lincoln | 2017/18 |
| 280-6 | 92 | Sri Lanka Under-19s v England Under-19s | Kinrara Academy Oval, Kuala Lumpur | 2006/07 |
| 280-5 | 83* | India Under-19s v Papua New Guinea Under-19s | Kinrara Academy Oval, Kuala Lumpur | 2007/08 |
| 280-9 | 86 | India Under-19s v Australia Under-19s | Ian Healy Oval, Brisbane | 2025/26 |
| 280-7 | 80 | West Indies Under-19s v England Under-19s | Queen's Park (New), St George's | 2025/26 |
| 279-9 | 95 | Pakistan Under-19s v Sri Lanka Under-19s | Sharjah Cricket Association Stadium, Sharjah | 2013/14 |
| 279-9 | 99* | Pakistan Under-19s v New Zealand Under-19s | ICC Cricket Academy Ground No 2, Dubai | 2015/16 |
| 279-8 | 76 | New Zealand Under-19s v South Africa Under-19s | Bay Oval, Mount Maunganui | 2017/18 |
| 279-5 | 93* | England Under-19s v Bangladesh Under-19s | The Kent County Cricket Ground, Beckenham | 2025 |
| 278-8 | 88 | New Zealand Under-19s v Bangladesh Under-19s | LC de Villiers Oval, Pretoria | 1997/98 |
| 278-6 | 53 | South Africa Under-19s v Netherlands Under-19s | Asgiriya Stadium, Kandy | 1999/00 |
| 278-8 | 67 | Bangladesh Under-19s v Sri Lanka Under-19s | Sinhalese Sports Club Ground, Colombo | 2005/06 |
| 278-8 | 94 | South Africa Under-19s v Australia Under-19s | Queenstown Events Centre, Queenstown | 2009/10 |
| 278-8 | 91 | Ireland Under-19s v West Indies Under-19s | Bert Sutcliffe Oval, Lincoln | 2017/18 |
| 278-6 | 71 | India Under-19s v Sri Lanka Under-19s | Tyronne Fernando Stadium, Moratuwa | 2018 |
| 277-5 | 88* | Pakistan Under-19s v New Zealand Under-19s | Molyneux Park, Alexandra | 1994/95 |
| 277-9 | 81 | India Under-19s v England Under-19s | Lal Bahadur Shastri Stadium, Hyderabad | 2000/01 |
| 277-8 | 80 | South Africa Under-19s v United States of America Under-19s | P Saravanamuttu Stadium, Colombo | 2005/06 |
| 277-5 | 77 | India Under-19s v Sri Lanka Under-19s | Police Park Ground, Colombo | 2007 |
| 277-8 | 83 | Sri Lanka Under-19s v Bangladesh Under-19s | Shere Bangla National Stadium, Mirpur | 2013 |
| 277-6 | 66 | Sri Lanka Under-19s v Scotland Under-19s | Absa Puk Oval, Potchefstroom | 2019/20 |
| 277-8 | 97 | England Under-19s v West Indies Under-19s | Queen's Park (New), St George's | 2025/26 |
| 276-7 | 70 | Australia Under-19s v India Under-19s | Western Australia Cricket Association Ground, Perth | 2008/09 |
| 276-6 | 68 | Sri Lanka Under-19s v Canada Under-19s | Lincoln No 3, Lincoln | 2009/10 |
| 276-7 | 96 | Australia Under-19s v South Africa Under-19s | Queenstown Events Centre, Queenstown | 2009/10 |
| 276-6 | 78 | South Africa Under-19s v Zimbabwe Under-19s | Sahara Park Newlands, Cape Town | 2010/11 |
| 276-9 | 87 | England Under-19s v Sri Lanka Under-19s | Spitfire Ground, St Lawrence, Canterbury | 2016 |
| 276-8 | 61 | England Under-19s v India Under-19s | Brightside Ground, Bristol | 2017 |
| 276-7 | 71 | Australia Under-19s v Pakistan Under-19s | Sir Vivian Richards Stadium, North Sound | 2021/22 |
| 276-9 | 87 | West Indies Under-19s v England Under-19s | Queen's Park (New), St George's | 2025/26 |
| 275-9 | 91 | Sri Lanka Under-19s v New Zealand Under-19s | Sharjah Cricket Association Stadium, Sharjah | 2013/14 |
| 275-6 | 84* | West Indies Under-19s v Zimbabwe Under-19s | Sheikh Zayed Stadium, Abu Dhabi | 2013/14 |
| 274-9 | 89 | England Young Cricketers v Australia Young Cricketers | Lord's Cricket Ground, St John's Wood | 1991 |
| 274-9 | 74 | Australia Under-19s v Pakistan Under-19s | Roy Henzell Oval, Caloundra | 2006/07 |
| 274 | 95 | Sri Lanka Under-19s v Bangladesh Under-19s | Bir Shrestha Shahid Flight Lieutenant Motiur Rahman Stadium, Khulna | 2009 |
| 274-5 | 88 | Australia Under-19s v Ireland Under-19s | Queenstown Events Centre, Queenstown | 2009/10 |
| 274-7 | 92 | England Under-19s v Nepal Under-19s | Tony Ireland Stadium, Townsville | 2012 |
| 274-6 | 82 | Bangladesh Under-19s v Pakistan Under-19s | Kinrara Academy Oval, Kuala Lumpur | 2017/18 |
| 274-6 | 86 | India Under-19s v England Under-19s | County Ground, Northampton | 2025 |
| 274-8 | 82 | Bangladesh Under-19s v Zimbabwe Under-19s | Sunrise Sports Club, Harare | 2025 |
| 273-9 | 85 | England Under-19s v South Africa Under-19s | Boland Park, Paarl | 2008/09 |
| 273-8 | 71 | India Under-19s v Sri Lanka Under-19s | R Premadasa Stadium, Colombo | 2016/17 |
| 273-3 | 86 | South Africa Under-19s v Scotland Under-19s | JB Marks Cricket Oval, Potchefstroom | 2023/24 |
| 272-6 | 65 | West Indies Young Cricketers v ICC Associates Young Cricketers | Wentworth Oval, Wentworth | 1987/88 |
| 272-6 | 93 | England Under-19s v India Under-19s | Endeavour Park, Townsville | 2011/12 |
| 272-8 | 93 | Zimbabwe Under-19s v Canada Under-19s | MainPower Oval, Rangiora | 2017/18 |
| 272-9 | 57 | Bangladesh Under-19s v England Under-19s | Haslegrave Ground, Loughborough | 2025 |
| 271-9 | 81* | India Under-19s v Australia Under-19s | Indian Petrochemicals Corporation Limited Sports Complex Ground, Vadodara | 1993/94 |
| 271-9 | 81 | New Zealand Under-19s v England Under-19s | Endeavour Park, Townsville | 2011/12 |
| 270-7 | 54 | Bangladesh Under-19s v Zimbabwe Under-19s | Nondescripts Cricket Club Ground, Colombo | 1999/00 |
| 270-8 | 82 | South Africa Under-19s v England Under-19s | Boland Park, Paarl | 2012/13 |
| 270-8 | 90 | South Africa Under-19s v India Under-19s | Port Trust Golden Jubilee Stadium, Visakhapatnam | 2013/14 |
| 269-6 | 78 | Bangladesh Under-19s v England Under-19s | Grace Road, Leicester | 2009 |
| 269-7 | 58 | Australia Under-19s v New Zealand Under-19s | Peter Burge Oval, Brisbane | 2019 |
| 269-9 | 97 | Scotland Under-19s v South Africa Under-19s | JB Marks Cricket Oval, Potchefstroom | 2023/24 |
| 269-5 | 95 | Bangladesh Under-19s v South Africa Under-19s | Harare Sports Club, Harare | 2025 |
| 268-8 | 58 | Australia Under-19s v New Zealand Under-19s | Lancaster Park, Christchurch | 1992/93 |
| 268-8 | 76 | England Under-19s v New Zealand Under-19s | Riverside Ground, Chester-le-Street | 1996 |
| 268-5 | 69* | South Africa Under-19s v India Under-19s | Bert Sutcliffe Oval, Lincoln | 2001/02 |
| 268-7 | 53* | India Under-19s v England Under-19s | The Royal and Sun Alliance County Ground, Bristol | 2002 |
| 268-7 | 61 | Pakistan Under-19s v Zimbabwe Under-19s | Harare Sports Club, Harare | 2009/10 |
| 268-8 | 72 | India Under-19s v South Africa Under-19s | Bidvest Wanderers Stadium, Johannesburg | 2009/10 |
| 268-9 | 62* | India Under-19s v England Under-19s | Endeavour Park, Townsville | 2011/12 |
| 268-9 | 74 | India Under-19s v Ireland Under-19s | Shere Bangla National Stadium, Mirpur | 2015/16 |
| 268-7 | 69 | Bangladesh Under-19s v South Africa Under-19s | Sheikh Abu Naser Stadium, Khulna | 2023 |
| 268-6 | 76* | England Under-19s v India Under-19s | County Ground, Northampton | 2025 |
| 267-9 | 52 | West Indies Under-19s v Australia Under-19s | Dubai Sports City Stadium, Dubai | 2011 |
| 267-6 | 71 | India Under-19s v South Africa Under-19s | Dr YS Rajasekhara Reddy ACA-VDCA Cricket Stadium, Visakhapatnam | 2013/14 |
| 267-9 | 72 | India Under-19s v Sri Lanka Under-19s | Shere Bangla National Stadium, Mirpur | 2015/16 |
| 267-5 | 87 | Sri Lanka Under-19s v Pakistan Under-19s | Mahinda Rajapaksha International Cricket Stadium, Hambantota | 2019 |
| 267-9 | 70 | Zimbabwe Under-19s v South Africa Under-19s | Hollywoodbets Kingsmead, Durban | 2019/20 |
| 267-7 | 86* | West Indies Under-19s v England Under-19s | De Beers Diamond Oval, Kimberley | 2019/20 |
| 267-9 | 82 | Ireland Under-19s v New Zealand Under-19s | Mangaung Oval, Bloemfontein | 2023/24 |
| 266 | 57 | Sri Lanka Under-19s v England Under-19s | Kinrara Academy Oval, Kuala Lumpur | 2006/07 |
| 266-8 | 52 | Pakistan Under-19s v Australia Under-19s | Roy Henzell Oval, Caloundra | 2006/07 |
| 266-8 | 98 | South Africa Under-19s v Zimbabwe Under-19s | Northerns-Goodwood Cricket Club Oval, Cape Town | 2010/11 |
| 266-8 | 94 | Pakistan Under-19s v South Africa Under-19s | Stellenbosch University Ground, Stellenbosch | 2011/12 |
| 266-6 | 90 | Bangladesh Under-19s v South Africa Under-19s | Sahara Stadium Kingsmead, Durban | 2015 |
| 266-9 | 72 | Bangladesh Under-19s v England Under-19s | Sheikh Kamal International Cricket Stadium, Cox's Bazar | 2018/19 |
| 266-9 | 83 | Ireland Under-19s v England Under-19s | Brockington Ground, Loughborough | 2025 |
| 265-7 | 60 | New Zealand Under-19s v England Under-19s | Riverside Ground, Chester-le-Street | 1996 |
| 265-8 | 62 | England Under-19s v India Under-19s | The Royal and Sun Alliance County Ground, Bristol | 2002 |
| 265-8 | 83 | West Indies Under-19s v Ireland Under-19s | Khulna Divisional Stadium, Khulna | 2003/04 |
| 265-9 | 51 | Ireland Under-19s v Canada Under-19s | MA Aziz Stadium, Chittagong | 2003/04 |
| 265-9 | 85 | Pakistan Under-19s v Zimbabwe Under-19s | Somerset College, Somerset West | 2011/12 |
| 265-8 | 81 | Bangladesh Under-19s v England Under-19s | Zohur Ahmed Chowdhury Stadium, Chittagong | 2011/12 |
| 265-6 | 83* | Bangladesh Under-19s v Zimbabwe Under-19s | Sheikh Zayed Stadium Nursery 1, Abu Dhabi | 2013/14 |
| 265-3 | 93 | Pakistan Under-19s v England Under-19s | Khan Shaheb Osman Ali Stadium, Fatullah | 2015/16 |
| 265 | 86 | India Under-19s v Bangladesh Under-19s | Queenstown Events Centre, Queenstown | 2017/18 |
| 265-6 | 87 | Afghanistan Under-19s v United Arab Emirates Under-19s | Absa Puk Oval, Potchefstroom | 2019/20 |
| 265 | 79 | England Under-19s v Bangladesh Under-19s | Devineni Venkata Ramana Praneetha Ground, Mulapadu | 2023/24 |
| 265 | 81 | Ireland Under-19s v Zimbabwe Under-19s | Absa Puk Oval, Potchefstroom | 2023/24 |
| 265-6 | 67 | Bangladesh Under-19s v South Africa Under-19s | Willowmoore Park Main Oval, Benoni | 2025 |
| 264-3 | 75 | South Africa Under-19s v Americas Under-19s | Welagedara Stadium, Kurunegala | 1999/00 |
| 264 | 68 | England Under-19s v Sri Lanka Under-19s | Kinrara Academy Oval, Kuala Lumpur | 2006/07 |
| 264-9 | 80 | India Under-19s v Bangladesh Under-19s | Police Park Ground, Colombo | 2007 |
| 264-7 | 83 | England Under-19s v Pakistan Under-19s | Khan Shaheb Osman Ali Stadium, Fatullah | 2015/16 |
| 264-7 | 56 | Pakistan Under-19s v Sri Lanka Under-19s | Mahinda Rajapaksha International Cricket Stadium, Hambantota | 2019 |
| 264-4 | 73 | India Under-19s v Bangladesh Under-19s | The 1st Central County Ground, Hove | 2019 |
| 263 | 64 | Bangladesh Under-19s v Papua New Guinea Under-19s | St John's College Ground, Johannesburg | 1997/98 |
| 263-8 | 64* | Sri Lanka Under-19s v Namibia Under-19s | R Premadasa Stadium, Colombo | 2005/06 |
| 263-6 | 99 | Australia Under-19s v India Under-19s | Tony Ireland Stadium, Townsville | 2011/12 |
| 263-9 | 73 | Namibia Under-19s v Canada Under-19s | ICC Cricket Academy Ground No 2, Dubai | 2013/14 |
| 263 | 87 | England Under-19s v Australia Under-19s | The Kent County Cricket Ground, Beckenham | 2023 |
| 262-9 | 80 | India Under-19s v England Under-19s | County Ground, Taunton | 2002 |
| 262 | 73 | Australia Under-19s v United States of America Under-19s | Queenstown Events Centre, Queenstown | 2009/10 |
| 262-7 | 74 | India Under-19s v Pakistan Under-19s | Dubai Sports City Stadium, Dubai | 2013/14 |
| 262-6 | 65 | India Under-19s v Afghanistan Under-19s | ICC Cricket Academy Ground No 2, Dubai | 2021/22 |
| 261 | 61 | India Under-19s v Australia Under-19s | Western Australia Cricket Association Ground, Perth | 2008/09 |
| 261-6 | 78 | India Under-19s v Zimbabwe Under-19s | Tony Ireland Stadium, Townsville | 2012 |
| 261 | 71 | India Under-19s v England Under-19s | R Premadasa Stadium, Colombo | 2015/16 |
| 261-5 | 80 | Bangladesh Under-19s v South Africa Under-19s | Senwes Park, Potchefstroom | 2019/20 |
| 260-7 | 97 | England Under-19s v Nepal Under-19s | Moors Sports Club Ground, Colombo | 1999/00 |
| 260-8 | 76 | Australia Under-19s v England Under-19s | Sydney Cricket Ground, Sydney | 2002/03 |
| 260 | 61 | Sri Lanka Under-19s v India Under-19s | Bangabandhu National Stadium, Dhaka | 2003/04 |
| 260-8 | 74 | India Under-19s v Bangladesh Under-19s | Sinovich Park, Sinoville, Pretoria | 2007/08 |
| 260-8 | 84 | Bangladesh Under-19s v Bermuda Under-19s | Bayuemas Oval, Kuala Lumpur | 2007/08 |
| 260-8 | 58 | South Africa Under-19s v Pakistan Under-19s | Kinrara Academy Oval, Kuala Lumpur | 2007/08 |
| 260-8 | 66 | Pakistan Under-19s v Zimbabwe Under-19s | St George's College Ground, Harare | 2009/10 |
| 260-6 | 66 | South Africa Under-19s v Sri Lanka Under-19s | Bidvest Wanderers Stadium, Johannesburg | 2009/10 |
| 260 | 45 | India Under-19s v Australia Under-19s | Tony Ireland Stadium, Townsville | 2011/12 |
| 260-9 | 83 | England Under-19s v South Africa Under-19s | Boland Park, Paarl | 2012/13 |
| 260-7 | 60* | South Africa Under-19s v England Under-19s | Senwes Park, Potchefstroom | 2017/18 |
| 260-7 | 43* | Sri Lanka Under-19s v Bangladesh Under-19s | Zohur Ahmed Chowdhury Stadium, Chittagong | 2019/20 |
| 260 | 80 | Sri Lanka Under-19s v England Under-19s | The 1st Central County Ground, Hove | 2024 |
| 260 | 68 | Zimbabwe Under-19s v Ireland Under-19s | Harare Sports Club, Harare | 2024/25 |
| 259-9 | 95 | Ireland Under-19s v West Indies Under-19s | Khulna Divisional Stadium, Khulna | 2003/04 |
| 259-7 | 70 | England Under-19s v Uganda Under-19s | MA Aziz Stadium, Chittagong | 2003/04 |
| 259-6 | 67 | New Zealand Under-19s v Uganda Under-19s | Nondescripts Cricket Club Ground, Colombo | 2005/06 |
| 259-2 | 63* | Sri Lanka Under-19s v Zimbabwe Under-19s | Sinhalese Sports Club Ground, Colombo | 2005/06 |
| 259-8 | 63* | South Africa Under-19s v England Under-19s | Sahara Park Newlands, Cape Town | 2008/09 |
| 259-8 | 47 | Sri Lanka Under-19s v West Indies Under-19s | Port Trust Golden Jubilee Stadium, Visakhapatnam | 2011/12 |
| 259-7 | 70 | Bangladesh Under-19s v West Indies Under-19s | Bourda, Georgetown | 2013/14 |
| 259-4 | 81* | Bangladesh Under-19s v South Africa Under-19s | Shere Bangla National Stadium, Mirpur | 2014/15 |
| 259 | 53 | England Under-19s v South Africa Under-19s | Senwes Park, Potchefstroom | 2017/18 |
| 259-4 | 74 | Zimbabwe Under-19s v Sri Lanka Under-19s | Bert Sutcliffe Oval, Lincoln | 2017/18 |
| 259-4 | 86* | Afghanistan Under-19s v India Under-19s | ICC Cricket Academy Ground No 2, Dubai | 2021/22 |
| 259-9 | 62 | India Under-19s v Pakistan Under-19s | ICC Cricket Academy Ground, Dubai | 2023/24 |
| 258-8 | 90 | West Indies Under-19s v Sri Lanka Under-19s | Port Trust Golden Jubilee Stadium, Visakhapatnam | 2011/12 |
| 258-8 | 74 | India Under-19s v New Zealand Under-19s | Shere Bangla National Stadium, Mirpur | 2015/16 |
| 258-5 | 70 | Bangladesh Under-19s v England Under-19s | Sheikh Kamal International Cricket Stadium, Cox's Bazar | 2018/19 |
| 257-7 | 93 | New Zealand Under-19s v England Under-19s | Hagley Park No 2, Christchurch | 1998/99 |
| 257-9 | 66 | Bangladesh Under-19s v Australia Under-19s | Fatullah Khan Saheb Osmani Stadium, Fatullah | 2003/04 |
| 257-8 | 76 | India Under-19s v England Under-19s | Kinrara Academy Oval, Kuala Lumpur | 2006/07 |
| 257-8 | 56 | Pakistan Under-19s v Bangladesh Under-19s | Niaz Stadium, Hyderabad | 2007/08 |
| 257-8 | 70 | Sri Lanka Under-19s v South Africa Under-19s | Bidvest Wanderers Stadium, Johannesburg | 2009/10 |
| 257 | 92* | West Indies Under-19s v Pakistan Under-19s | Fitzherbert Park, Palmerston North | 2009/10 |
| 257-6 | 65 | South Africa Under-19s v India Under-19s | Dr YS Rajasekhara Reddy ACA-VDCA Cricket Stadium, Visakhapatnam | 2013/14 |
| 257-9 | 76 | Bangladesh Under-19s v South Africa Under-19s | Zohur Ahmed Chowdhury Stadium, Chittagong | 2014/15 |
| 257-7 | 70 | Sri Lanka Under-19s v England Under-19s | Sir Paul Getty's Ground, Wormsley | 2016 |
| 257-4 | 89 | West Indies Under-19s v Zimbabwe Under-19s | Harare Sports Club, Harare | 2017 |
| 257-5 | 89 | England Under-19s v India Under-19s | College Ground, Cheltenham | 2019 |
| 256-8 | 91 | Zimbabwe Under-19s v Sri Lanka Under-19s | Sinhalese Sports Club Ground, Colombo | 2005/06 |
| 256-5 | 68 | Pakistan Under-19s v Sri Lanka Under-19s | Colts Cricket Club Ground, Colombo | 2007/08 |
| 256-3 | 84 | Pakistan Under-19s v England Under-19s | Sinhalese Sports Club Ground, Colombo | 2007/08 |
| 256-9 | 59 | Bangladesh Under-19s v England Under-19s | Zohur Ahmed Chowdhury Stadium, Chittagong | 2011/12 |
| 256 | 67 | South Africa Under-19s v England Under-19s | Trent Bridge, Nottingham | 2014 |
| 256-7 | 77 | New Zealand Under-19s v Pakistan Under-19s | ICC Cricket Academy Ground No 2, Dubai | 2015/16 |
| 256-8 | 71 | Sri Lanka Under-19s v Australia Under-19s | P Sara Oval, Colombo | 2018/19 |
| 256-7 | 73 | England Under-19s v Bangladesh Under-19s | Sheikh Kamal International Cricket Stadium, Cox's Bazar | 2018/19 |
| 256-6 | 51 | India Under-19s v England Under-19s | College Ground, Cheltenham | 2019 |
| 256 | 58 | Zimbabwe Under-19s v Pakistan Under-19s | Witrand Cricket Field, Potchefstroom | 2019/20 |
| 256-4 | 77* | Zimbabwe Under-19s v West Indies Under-19s | Diego Martin Sporting Complex, Diego Martin | 2021/22 |
| 256 | 69 | South Africa Under-19s v India Under-19s | Alan Lawson Oval, Johannesburg | 2023/24 |
| 256 | 83 | West Indies Under-19s v Sri Lanka Under-19s | Coolidge Cricket Ground, Coolidge | 2025 |
| 255-9 | 67* | Bangladesh Under-19s v Pakistan Under-19s | Port Trust Golden Jubilee Stadium, Visakhapatnam | 2005/06 |
| 255-6 | 70* | Pakistan Under-19s v West Indies Under-19s | National Stadium, Karachi | 2005/06 |
| 255 | 64 | Bangladesh Under-19s v Uganda Under-19s | Sinhalese Sports Club Ground, Colombo | 2005/06 |
| 255 | 85 | Pakistan Under-19s v Australia Under-19s | Roy Henzell Oval, Caloundra | 2006/07 |
| 255-9 | 50 | Pakistan Under-19s v New Zealand Under-19s | ICC Cricket Academy Ground No 2, Dubai | 2015/16 |
| 254-8 | 84 | Sri Lanka Young Cricketers v England Young Cricketers | County Ground, Chelmsford | 1986 |
| 254 | 67 | Australia Young Cricketers v New Zealand Young Cricketers | Wentworth Oval, Wentworth | 1987/88 |
| 254-7 | 48* | New Zealand Under-19s v South Africa Under-19s | Owen Delany Park, Taupo | 2000/01 |
| 254-8 | 53 | West Indies Under-19s v Pakistan Under-19s | National Stadium, Karachi | 2005/06 |
| 254-7 | 84 | India Under-19s v England Under-19s | R Premadasa Stadium, Colombo | 2015/16 |
| 254 | 75 | South Africa Under-19s v Bangladesh Under-19s | Sheikh Abu Naser Stadium, Khulna | 2023 |
| 254 | 95 | Pakistan Under-19s v Sri Lanka Under-19s | National Bank of Pakistan Sports Complex, Karachi | 2023/24 |
| 253-9 | 70 | India Under-19s v South Africa Under-19s | Nehru Stadium, Indore | 1995/96 |
| 253 | 81 | Sri Lanka Under-19s v India Under-19s | Tyronne Fernando Stadium, Moratuwa | 1996/97 |
| 253-8 | 71 | Australia Under-19s v Pakistan Under-19s | Kimberley Country Club, Kimberley | 1997/98 |
| 253-7 | 47* | Australia Under-19s v England Under-19s | Melbourne Cricket Ground, Melbourne | 2002/03 |
| 253-9 | 66 | India Under-19s v West Indies Under-19s | Bangabandhu National Stadium, Dhaka | 2003/04 |
| 253 | 57 | England Under-19s v India Under-19s | Maharaja Bir Bikram College Stadium, Agartala | 2004/05 |
| 253-6 | 66* | India Under-19s v South Africa Under-19s | Andhra Cricket Association-Visakhapatnam District Cricket Association Stadium, Visakhapatnam | 2005/06 |
| 253-6 | 75* | Bangladesh Under-19s v Sri Lanka Under-19s | Bangladesh Krira Shikkha Protisthan Ground, Savar | 2005/06 |
| 253 | 56 | Pakistan Under-19s v West Indies Under-19s | National Bank of Pakistan Sports Complex, Karachi | 2005/06 |
| 253 | 66 | Bangladesh Under-19s v Papua New Guinea Under-19s | Fitzherbert Park, Palmerston North | 2009/10 |
| 253-6 | 75 | Pakistan Under-19s v Afghanistan Under-19s | John Blanck Oval, Maroochydore | 2012 |
| 253 | 75 | Afghanistan Under-19s v Australia Under-19s | Sheikh Zayed Stadium Nursery 2, Abu Dhabi | 2013/14 |
| 253 | 75 | South Africa Under-19s v Pakistan Under-19s | City Oval, Pietermaritzburg | 2019 |
| 253-8 | 65 | Australia Under-19s v England Under-19s | De Beers Diamond Oval, Kimberley | 2019/20 |
| 253-8 | 42 | England Under-19s v Sri Lanka Under-19s | Uptonsteel County Ground, Leicester | 2022 |
| 253 | 80 | West Indies Under-19s v Sri Lanka Under-19s | Rangiri Dambulla International Stadium, Dambulla | 2023 |
| 253-7 | 55 | Australia Under-19s v India Under-19s | Willowmoore Park Main Oval, Benoni | 2023/24 |
| 252-9 | 45 | South Africa Under-19s v England Under-19s | Supersport Centurion, Centurion | 1997/98 |
| 252-8 | 99 | India Under-19s v England Under-19s | Willowmoore Park Main Oval, Benoni | 1997/98 |
| 252-8 | 84 | Australia Under-19s v West Indies Under-19s | Bert Sutcliffe Oval, Lincoln | 2001/02 |
| 252-8 | 59 | Sri Lanka Under-19s v West Indies Under-19s | R Premadasa Stadium, Colombo | 2003/04 |
| 252 | 75 | Pakistan Under-19s v Bangladesh Under-19s | Port Trust Golden Jubilee Stadium, Visakhapatnam | 2005/06 |
| 252-9 | 67 | Bangladesh Under-19s v England Under-19s | Zohur Ahmed Chowdhury Stadium, Chittagong | 2011/12 |
| 252-2 | 74 | England Under-19s v South Africa Under-19s | Senwes Park, Potchefstroom | 2017/18 |
| 252-7 | 71 | India Under-19s v New Zealand Under-19s | Chatsworth Stadium, Chatsworth | 2019/20 |
| 252-7 | 82 | England Under-19s v Australia Under-19s | De Beers Diamond Oval, Kimberley | 2019/20 |
| 252 | 76* | Sri Lanka Under-19s v England Under-19s | Uptonsteel County Ground, Leicester | 2022 |
| 252-6 | 54 | England Under-19s v Australia Under-19s | The 1st Central County Ground, Hove | 2023 |
| 251-9 | 54 | New Zealand Young Cricketers v England Young Cricketers | Trust Bank Park, Hamilton | 1990/91 |
| 251 | 92 | England Under-19s v Pakistan Under-19s | Supersport Centurion, Centurion | 1997/98 |
| 251 | 87 | Sri Lanka Under-19s v India Under-19s | Feroz Shah Kotla, Delhi | 1998/99 |
| 251-9 | 92 | Pakistan Under-19s v West Indies Under-19s | Khulna Divisional Stadium, Khulna | 2003/04 |
| 251 | 77 | Australia Under-19s v West Indies Under-19s | Sinhalese Sports Club Ground, Colombo | 2005/06 |
| 251-8 | 87 | India Under-19s v Sri Lanka Under-19s | Kinrara Academy Oval, Kuala Lumpur | 2006/07 |
| 251-9 | 88 | Bangladesh Under-19s v Sri Lanka Under-19s | Shamsul Huda Stadium, Jessore | 2009 |
| 251-8 | 66 | Bangladesh Under-19s v England Under-19s | Khan Shaheb Osman Ali Stadium, Fatullah | 2009/10 |
| 251-6 | 91 | Pakistan Under-19s v Bangladesh Under-19s | Fitzherbert Park, Palmerston North | 2009/10 |
| 251-6 | 69 | Bangladesh Under-19s v Sri Lanka Under-19s | R Premadasa Stadium, Colombo | 2014/15 |
| 251-7 | 95 | Australia Under-19s v Sri Lanka Under-19s | Kingston Twin Ovals, Hobart | 2016/17 |
| 251 | 74 | England Under-19s v South Africa Under-19s | Roseworth Terrace, Gosforth | 2018 |
| 251-7 | 76 | Sri Lanka Under-19s v West Indies Under-19s | Conaree Sports Club, Conaree | 2021/22 |
| 251 | 77 | Australia Under-19s v England Under-19s | The 1st Central County Ground, Hove | 2023 |
| 251 | 98 | Pakistan Under-19s v Sri Lanka Under-19s | National Bank of Pakistan Sports Complex, Karachi | 2023/24 |
| 251-7 | 76 | India Under-19s v Bangladesh Under-19s | Mangaung Oval, Bloemfontein | 2023/24 |
| 251-6 | 76* | Scotland Under-19s v Namibia Under-19s | Willowmoore Park Main Oval, Benoni | 2023/24 |
| 250 | 85 | Australia Under-19s v England Under-19s | County Ground, Hove | 1999 |
| 250 | 42 | South Africa Under-19s v West Indies Under-19s | Fatullah Khan Saheb Osmani Stadium, Fatullah | 2003/04 |
| 250 | 67 | India Under-19s v Pakistan Under-19s | Gaddafi Stadium, Lahore | 2006/07 |
| 250-8 | 70 | Bangladesh Under-19s v Zimbabwe Under-19s | Shaheed Chandu Stadium, Bogra | 2009/10 |
| 250-5 | 63 | Bangladesh Under-19s v Pakistan Under-19s | Fitzherbert Park, Palmerston North | 2009/10 |
| 250 | 64 | New Zealand Under-19s v South Africa Under-19s | Lincoln No 3, Lincoln | 2009/10 |
| 250-7 | 64 | India Under-19s v Pakistan Under-19s | Dubai Sports City Stadium, Dubai | 2013/14 |
| 250-5 | 75 | Sri Lanka Under-19s v India Under-19s | R Premadasa Stadium, Colombo | 2015/16 |
| 250-3 | 71 | Scotland Under-19s v United Arab Emirates Under-19s | Witrand Cricket Field, Potchefstroom | 2019/20 |
| 250-9 | 56 | West Indies Under-19s v Sri Lanka Under-19s | Conaree Sports Club, Conaree | 2021/22 |
| 250-9 | 79 | Afghanistan Under-19s v Pakistan Under-19s | ICC Cricket Academy Ground, Dubai | 2024/25 |