| 136 | N Pooran (143) & JJ Jones (20) | West Indies Under-19s v Australia Under-19s | Dubai Sports City Stadium, Dubai | 2013/14 |
| 86* | JFA Field (38*) & KDC Clarke (46*) | New Zealand Under-19s v West Indies Under-19s | Willowmoore Park Main Oval, Benoni | 2019/20 |
| 82 | [unknown] & [unknown] | Pakistan Under-19s v Sri Lanka Under-19s | Gaddafi Stadium, Lahore | 2004/05 |
| 76 | KPCM Peiris (24) & NLTC Perera (47) | Sri Lanka Under-19s v Pakistan Under-19s | Sinhalese Sports Club Ground, Colombo | 2007/08 |
| 76* | LD Madushanka (42*) & PHT Kaushal (30*) | Sri Lanka Under-19s v West Indies Under-19s | Dr YS Rajasekhara Reddy ACA-VDCA Cricket Stadium, Visakhapatnam | 2011/12 |
| 74 | RADSI Ranathunga (46) & TS Mathew (34) | Sri Lanka Under-19s v Afghanistan Under-19s | Tolerance Oval, Abu Dhabi | 2022/23 |
| 71 | WJ Clark (42) & LMJ Dasent (35*) | New Zealand Under-19s v Australia Under-19s | Peter Burge Oval, Brisbane | 2019 |
| 71 | Ashiqur Zaman (54*) & Naimur Rahman (27) | Bangladesh Under-19s v Sri Lanka Under-19s | Rangiri Dambulla International Stadium, Dambulla | 2021/22 |
| 69 | [unknown] & [unknown] | New Zealand Young Cricketers v India Under-19s | Morrinsville Recreation Ground, Morrinsville | 1987/88 |
| 69 | Abbas Afridi (53*) & Naseem Shah (23) | Pakistan Under-19s v South Africa Under-19s | Chatsworth Stadium, Chatsworth | 2019 |
| 67 | [unknown] & [unknown] | Australia Under-19s v New Zealand Young Cricketers | Pukekura Park, New Plymouth | 1986/87 |
| 67 | CS Baugh (47*) & KK Peters (27) | West Indies Under-19s v England Under-19s | County Ground, Chelmsford | 2001 |
| 67 | Zulqarnain Haider (44) & Mansoor Amjad (21) | Pakistan Under-19s v England Under-19s | Fatullah Khan Saheb Osmani Stadium, Fatullah | 2003/04 |
| 67* | KRS Silva (45*) & AA Daniel (20*) | Sri Lanka Under-19s v Pakistan Under-19s | Mahinda Rajapaksha International Cricket Stadium, Hambantota | 2019 |
| 66* | HPG Perera (38*) & PM Pushpakumara (29*) | Sri Lanka Under-19s v Bangladesh Under-19s | Narayanganj Osmani Stadium, Fatullah | 2005/06 |
| 64 | [unknown] & [unknown] | West Indies Under-19s v England Under-19s | Kensington Oval, Bridgetown | 1994/95 |
| 63 | [unknown] & [unknown] | West Indies Under-19s v Bangladesh Under-19s | Sinhalese Sports Club Ground, Colombo | 2005/06 |
| 62 | [unknown] & [unknown] | Ireland Under-19s v Denmark Under-19s | Christian Brothers College Old Boys Ground, Boksburg | 1997/98 |
| 62 | Y Valli (53) & JG Dill (34*) | South Africa Under-19s v West Indies Under-19s | Dubai Sports City Stadium, Dubai | 2013/14 |
| 62 | Ijaz Ahmad (70*) & Fazal Haque (11) | Afghanistan Under-19s v South Africa Under-19s | St Xavier's College Ground, Thumba | 2018/19 |
| 60* | FF Lellman (116*) & HB Dickson (23*) | New Zealand Under-19s v Bangladesh Under-19s | Bert Sutcliffe Oval, Lincoln | 2019/20 |
| 58 | DD Ebrahim (60*) & IA Engelbrecht (17) | Zimbabwe Under-19s v South Africa Under-19s | St George's Park, Port Elizabeth | 1997/98 |
| 58 | A Mohammed (70) & H Shahid (9*) | United States of America Under-19s v Australia Under-19s | Queenstown Events Centre, Queenstown | 2009/10 |
| 57* | GJ Pratt (68*) & TJ Murtagh (13*) | England Under-19s v Zimbabwe Under-19s | Colombo Cricket Club Ground, Colombo | 1999/00 |
| 56 | GT de Silva (44) & AD Mathews (15) | Sri Lanka Under-19s v Pakistan Under-19s | Uyanwatte Stadium, Matara | 2003 |
| 56 | Noor Hossain (34) & Abul Hasan (32*) | Bangladesh Under-19s v England Under-19s | Zohur Ahmed Chowdhury Stadium, Chittagong | 2009/10 |
| 56 | AJADDLA Jayasinghe (53) & JMABD Jayasundera (34) | Sri Lanka Under-19s v England Under-19s | Moors Sports Club Ground, Colombo | 2010/11 |
| 55* | Abul Hasan (30*) & Shaker Ahmed (26*) | Bangladesh Under-19s v Sri Lanka Under-19s | Shere Bangla National Stadium, Mirpur | 2009 |
| 55* | AJ Ball (25*) & BA Hutton (26*) | England Under-19s v Bangladesh Under-19s | Sylhet Stadium, Sylhet | 2011/12 |
| 55 | Mosaddek Hossain (47) & Dewan Sabbir (29*) | Bangladesh Under-19s v Sri Lanka Under-19s | Bayuemas Oval, Kuala Lumpur | 2012 |
| 55 | JM Clarke (43) & L Wood (24*) | England Under-19s v Pakistan Under-19s | Dubai Sports City Stadium, Dubai | 2013/14 |
| 55 | WC Ludick (42) & LL Sipamla (17*) | South Africa Under-19s v Namibia Under-19s | Sheikh Kamal International Cricket Stadium No 2 Ground, Cox's Bazar | 2015/16 |
| 55 | DR Mousley (48) & SW Currie (22*) | England Under-19s v West Indies Under-19s | Sir Vivian Richards Stadium, North Sound | 2019/20 |
| 55 | Naseer Khan Maroofkhil (31) & Faridoon Dawoodzai (29) | Afghanistan Under-19s v Nepal Under-19s | Buffalo Park, East London | 2023/24 |
| 54 | H Dyer (23) & OC Riley (25) | Ireland Under-19s v England Under-19s | Haslegrave Ground, Loughborough | 2024 |
| 53 | J Miyagi (38) & E Nuwagaba (12*) | Uganda Under-19s v Ireland Under-19s | Everest Cricket Club Ground, Georgetown | 2021/22 |
| 52* | L Wood (25*) & BJ Taylor (21*) | England Under-19s v South Africa Under-19s | Trent Bridge, Nottingham | 2014 |
| 52 | Ariful Islam (100) & Ripon Mondol (7*) | Bangladesh Under-19s v Pakistan Under-19s | Coolidge Cricket Ground, Coolidge | 2021/22 |
| 52 | KV Thewmika (33) & RADSI Ranathunga (28) | Sri Lanka Under-19s v Afghanistan Under-19s | Tolerance Oval, Abu Dhabi | 2022/23 |
| 51* | CC Alexander (23*) & AP Richardson (22*) | West Indies Under-19s v New Zealand Under-19s | Nondescripts Cricket Club Ground, Colombo | 1999/00 |
| 51 | GJ Morgan (32) & NB Beard (23) | New Zealand Under-19s v England Under-19s | County Ground, Hove | 2008 |
| 51 | JJ Sangha (102) & TJ O'Donnell (16) | Australia Under-19s v Pakistan Under-19s | ICC Cricket Academy Ground No 2, Dubai | 2015/16 |
| 50 | PDG Chandrakumara (45) & KTGD Prasad (24) | Sri Lanka Under-19s v Pakistan Under-19s | Lincoln No 3, Lincoln | 2001/02 |
| 50* | SK Rasheed (90*) & VK Ostwal (28*) | India Under-19s v Bangladesh Under-19s | Sharjah Cricket Association Stadium, Sharjah | 2021/22 |
