| 130* | ET Bawa (105*) & GF Chirawu (54*) | Zimbabwe Under-19s v Canada Under-19s | North West University No 2 Ground, Potchefstroom | 2019/20 |
| 128 | BJ Bennett (65) & CM Mitchell (73) | Zimbabwe Under-19s v Ireland Under-19s | Mount Gay North Stars, Crab Hill | 2021/22 |
| 102* | Ejaz Nawaz (58*) & FEH Nijman (30*) | Netherlands Under-19s v Americas Under-19s | Radella Cricket Grounds, Radella | 1999/00 |
| 93 | CKB Kulasekara (64) & HKSR Kaluhalamulla (37) | Sri Lanka Under-19s v West Indies Under-19s | Fatullah Khan Saheb Osmani Stadium, Fatullah | 2003/04 |
| 93 | JEK Rew (95) & JJG Sales (34*) | England Under-19s v India Under-19s | Sir Vivian Richards Stadium, North Sound | 2021/22 |
| 91* | MD Gunathilleke (83*) & VSR de Mel (29*) | Sri Lanka Under-19s v England Under-19s | FP Fenner's Ground, Cambridge | 2010 |
| 88 | [unknown] & [unknown] | England Young Cricketers v Australia Young Cricketers | Renmark Oval, Renmark | 1987/88 |
| 88 | WG Bosisto (107) & S Cassel (53) | Australia Under-19s v West Indies Under-19s | Port Trust Golden Jubilee Stadium, Visakhapatnam | 2011/12 |
| 85 | BJ Bennett (83) & TN Mataranyika (26) | Zimbabwe Under-19s v Pakistan Under-19s | Diego Martin Sporting Complex, Diego Martin | 2021/22 |
| 83 | JE Root (54) & DR Briggs (41) | England Under-19s v Bangladesh Under-19s | Khan Shaheb Osman Ali Stadium, Fatullah | 2009/10 |
| 83 | Parvez Rahman (60) & Wasi Siddiquee (32) | Bangladesh Under-19s v England Under-19s | Chukkapalli Pitchaiah Cricket Ground, Mulapadu | 2023/24 |
| 81 | Suhrawadi Shuvo (56*) & Dolar Mahmud (36) | Bangladesh Under-19s v England Under-19s | Royal Selangor Club, Kuala Lumpur | 2007/08 |
| 81* | D Hooda (76*) & K Yadav (19*) | India Under-19s v Sri Lanka Under-19s | ICC Cricket Academy Ground, Dubai | 2013/14 |
| 80* | [unknown] & [unknown] | Bangladesh Under-19s v Kenya Under-19s | Fanie du Toit Sports Complex, Potchefstroom | 1997/98 |
| 80 | KGPPV Perera (155) & KV Thewmika (28*) | Sri Lanka Under-19s v West Indies Under-19s | Rangiri Dambulla International Stadium, Dambulla | 2023 |
| 79 | Riaz Afridi (62) & Tariq Mahmood (24*) | Pakistan Under-19s v Sri Lanka Under-19s | National Stadium, Karachi | 2003/04 |
| 79 | GC Stevens (29) & KC Africa (52*) | South Africa Under-19s v Nepal Under-19s | Chittagong Divisional Stadium, Chittagong | 2003/04 |
| 79 | PJ Hughes (48*) & SD Robson (39) | Australia Under-19s v Pakistan Under-19s | Roy Henzell Oval, Caloundra | 2006/07 |
| 76* | Ali Arman (49*) & Murad Khan (31*) | Bangladesh Under-19s v Canada Under-19s | Colin Maiden Park, Auckland | 2001/02 |
| 76 | GCH Hill (46) & NJH Kimber (37) | England Under-19s v India Under-19s | The Cloudfm County Ground, Chelmsford | 2019 |
| 76 | Mahfuzur Rahman (74) & Mohammad Rafi Uzzaman (23) | Bangladesh Under-19s v South Africa Under-19s | Sheikh Abu Naser Stadium, Khulna | 2023 |
| 74 | TAR Scriven (53) & LBK Hollman (34) | England Under-19s v South Africa Under-19s | Senwes Park, Potchefstroom | 2017/18 |
| 73 | [unknown] & [unknown] | Pakistan Young Cricketers v England Young Cricketers | The Foster's Oval, Kennington | 1990 |
| 73 | [unknown] & [unknown] | India Under-19s v Australia Under-19s | Indian Petrochemicals Corporation Limited Sports Complex Ground, Vadodara | 1993/94 |
| 73 | TH Aspinwall (30*) & AM Foreman (30) | England Under-19s v Sri Lanka Under-19s | Uptonsteel County Ground, Leicester | 2022 |
| 71 | Marshall Ayub (90) & Rubel Hossain (20) | Bangladesh Under-19s v Sri Lanka Under-19s | Shaheed Chandu Stadium, Bogra | 2007/08 |
| 69 | TM van Vuuren (48) & MR Brett (37) | South Africa Under-19s v Zimbabwe Under-19s | Hollywoodbets Kingsmead, Durban | 2019/20 |
| 69 | DN Wellalage (34) & KHRA de Silva (21) | Sri Lanka Under-19s v Afghanistan Under-19s | Coolidge Cricket Ground, Coolidge | 2021/22 |
| 68* | KB Rawat (53*) & IK Pathan (42*) | India Under-19s v England Under-19s | The Royal and Sun Alliance County Ground, Bristol | 2002 |
| 68 | A Mohammed (70) & Muhammad Ghous (30) | United States of America Under-19s v Australia Under-19s | Queenstown Events Centre, Queenstown | 2009/10 |
| 68 | RS Ambrish (66*) & YK Guha (10) | India Under-19s v England Under-19s | Visit Worcestershire New Road, Worcester | 2025 |
| 67 | JR Pattison (40) & I Boylan (37) | Australia Under-19s v Sri Lanka Under-19s | Sinhalese Sports Club Ground, Colombo | 2014/15 |
| 67 | WK Makwetu (99*) & GW Coetzee (29) | South Africa Under-19s v West Indies Under-19s | Bay Oval, Mount Maunganui | 2017/18 |
| 66 | JJ Sandher (49*) & S Anjaria (20) | Canada Under-19s v Scotland Under-19s | Melville Park, Auckland | 2001/02 |
| 66 | MA Ouma (150*) & AV Karia (10) | Kenya Under-19s v Papua New Guinea Under-19s | Colin Maiden Park No 2, Auckland | 2001/02 |
| 66 | CP Savage (46) & P Subrayen (48) | South Africa Under-19s v England Under-19s | County Ground, Taunton | 2011 |
| 66 | Saifullah Bangash (37) & Saud Shakil (30*) | Pakistan Under-19s v England Under-19s | ICC Cricket Academy Ground, Dubai | 2013/14 |
| 66* | SDL Daniel (85*) & WS Kumara (38*) | Sri Lanka Under-19s v Bangladesh Under-19s | Rangiri Dambulla International Stadium, Dambulla | 2021/22 |
| 66 | JA Richards (27) & TH Aspinwall (44) | England Under-19s v Australia Under-19s | Allan Border Field, Brisbane | 2022/23 |
| 65 | AS Jamwal (40) & YR Thakur (30) | India Under-19s v England Under-19s | Wankhede Stadium, Mumbai | 2016/17 |
| 65* | JP de Klerk (28*) & GW Coetzee (36*) | South Africa Under-19s v Kenya Under-19s | Lincoln No 3, Lincoln | 2017/18 |
| 64 | [unknown] & [unknown] | India Under-19s v Australia Under-19s | Lal Bahadur Shastri Stadium, Hyderabad | 1984/85 |
| 64 | MJ Mindley (38) & G Motie (38) | West Indies Under-19s v Bangladesh Under-19s | Everest Cricket Club Ground, Georgetown | 2013/14 |
| 63* | Zafar Gohar (37*) & Amad Butt (26*) | Pakistan Under-19s v England Under-19s | Dubai Sports City Stadium, Dubai | 2013/14 |
| 63 | Mohammad Shihab (98) & Rohanat Doullah (11) | Bangladesh Under-19s v Afghanistan Under-19s | Tolerance Oval, Abu Dhabi | 2022/23 |
| 62* | PD Trego (53*) & CM Gazzard (20*) | England Under-19s v Sri Lanka Under-19s | Sophia Gardens, Cardiff | 2000 |
| 62 | LM Jongwe (50) & DSA Bell (30*) | Zimbabwe Under-19s v Bangladesh Under-19s | Sheikh Zayed Stadium Nursery 1, Abu Dhabi | 2013/14 |
| 61 | PVR de Silva (58) & BADN Silva (23) | Sri Lanka Under-19s v India Under-19s | R Premadasa Stadium, Colombo | 2015/16 |
| 60 | [unknown] & [unknown] | Scotland Under-19s v West Indies Under-19s | Gert Van Rensburg Stadium, Fochville | 1997/98 |
| 60 | SD Robson (27) & SN Austin (38) | Australia Under-19s v Pakistan Under-19s | Roy Henzell Oval, Caloundra | 2006/07 |
| 60 | JR Mepani (44*) & SP Vasudev (31) | Kenya Under-19s v Papua New Guinea Under-19s | MainPower Oval, Rangiora | 2017/18 |
| 60* | DR Mousley (51*) & KL Aldridge (32*) | England Under-19s v Australia Under-19s | De Beers Diamond Oval, Kimberley | 2019/20 |
| 60 | T Edward (53*) & N Edward (13) | West Indies Under-19s v Sri Lanka Under-19s | Rangiri Dambulla International Stadium, Dambulla | 2023 |
