| 166 | SR Patel (122) & TJ New (50) | England Under-19s v South Africa Under-19s | Arundel Castle Cricket Club Ground, Arundel | 2003 |
| 131 | D Marais (65) & J James (47) | South Africa Under-19s v West Indies Under-19s | JB Marks Cricket Oval, Potchefstroom | 2023/24 |
| 130 | Barkat Ibrahimzai (79) & Nazifullah Amiri (56) | Afghanistan Under-19s v Pakistan Under-19s | ICC Cricket Academy Ground, Dubai | 2024/25 |
| 127* | HKC Jayananda (78*) & K Gamage (60*) | Sri Lanka Under-19s v Bangladesh Under-19s | Colombo Cricket Club Ground, Colombo | 2024/25 |
| 119 | Mosaddek Hossain (77) & Saeed Sarkar (83) | Bangladesh Under-19s v West Indies Under-19s | Zohur Ahmed Chowdhury Stadium, Chittagong | 2013/14 |
| 119 | AS Athanaze (116*) & NRJ Young (57) | West Indies Under-19s v Kenya Under-19s | Lincoln No 3, Lincoln | 2017/18 |
| 117* | [unknown] & [unknown] | England Under-19s v West Indies Under-19s | Kensington Oval, Bridgetown | 1994/95 |
| 116 | DMW Rawlins (107*) & MD Fisher (26) | England Under-19s v India Under-19s | Wankhede Stadium, Mumbai | 2016/17 |
| 115* | TP Doropoulos (179*) & AC Bird (29*) | Australia Under-19s v England Under-19s | Hurstville Oval, Sydney | 2002/03 |
| 113 | AT Rayudu (177*) & KB Rawat (37) | India Under-19s v England Under-19s | County Ground, Taunton | 2002 |
| 111 | LP Goldsworthy (69*) & KL Aldridge (58) | England Under-19s v Bangladesh Under-19s | Blackfinch New Road, Worcester | 2019 |
| 108 | JM Cox (122*) & GP Balderson (56) | England Under-19s v Bangladesh Under-19s | The Kent County Cricket Ground, Beckenham | 2019 |
| 103 | Aayan Afzal Khan (93) & S Bawa (51) | United Arab Emirates Under-19s v West Indies Under-19s | Queen's Park Oval, Port of Spain | 2021/22 |
| 101* | [unknown] & [unknown] | Pakistan Under-19s v West Indies Under-19s | National Stadium, Karachi | 2005/06 |
| 101 | Mohammad Shihab (98) & Sheikh Paevez (48) | Bangladesh Under-19s v Afghanistan Under-19s | Tolerance Oval, Abu Dhabi | 2022/23 |
| 96 | MA Gough (56*) & CP Schofield (49) | England Under-19s v South Africa Under-19s | Supersport Centurion, Centurion | 1997/98 |
| 96 | [unknown] & [unknown] | Zimbabwe Under-19s v Nepal Under-19s | Colombo Cricket Club Ground, Colombo | 2005/06 |
| 95* | GJ Bell (56*) & AJ Horton (53*) | England Under-19s v Afghanistan Under-19s | Sir Vivian Richards Stadium, North Sound | 2021/22 |
| 94* | [unknown] & [unknown] | New Zealand Under-19s v India Under-19s | Nehru Stadium, Pune | 1991/92 |
| 91 | MD Gunathilleke (70) & WMC Jayampathi (29) | Sri Lanka Under-19s v South Africa Under-19s | Bidvest Wanderers Stadium, Johannesburg | 2009/10 |
| 90 | MJS Patrick (68) & JM James (43) | West Indies Under-19s v Nigeria Under-19s | Country Club B Field, Kimberley | 2019/20 |
| 88 | [unknown] & [unknown] | India Under-19s v Sri Lanka Under-19s | Nondescripts Cricket Club Ground, Colombo | 2007 |
| 88 | SMA Priyanjan (63) & SS Pathirana (32) | Sri Lanka Under-19s v Pakistan Under-19s | Sinhalese Sports Club Ground, Colombo | 2007/08 |
| 87 | MRD Brundle (36) & E Chigumbura (42) | Zimbabwe Under-19s v Papua New Guinea Under-19s | Melville Park, Auckland | 2001/02 |
| 87 | MM Ali (57) & TC Smith (56) | England Under-19s v India Under-19s | Maharaja Bir Bikram College Stadium, Agartala | 2004/05 |
| 86* | HS Bedi (40*) & US Walia (42*) | Canada Under-19s v United Arab Emirates Under-19s | Witrand Cricket Field, Potchefstroom | 2019/20 |
| 86* | WA Luxton (84*) & AJ Horton (36) | England Under-19s v Sri Lanka Under-19s | Sinhalese Sports Club Ground, Colombo | 2021/22 |
| 85* | Mohibullah Paak (58*) & Afsar Zazai (37*) | Afghanistan Under-19s v Papua New Guinea Under-19s | Allan Border Field, Brisbane | 2012 |
| 84* | AM Rowe (49*) & NM Hauritz (48*) | Australia Under-19s v England Under-19s | County Ground, Chelmsford | 1999 |
| 84 | Musheer Khan (50) & MP Abhishek (62) | India Under-19s v Bangladesh Under-19s | ICC Cricket Academy Ground No 2, Dubai | 2023/24 |
| 83 | GT de Silva (33) & CKB Kulasekara (37*) | Sri Lanka Under-19s v Zimbabwe Under-19s | Shaheed Chandu Stadium, Bogra | 2003/04 |
| 83 | AD Mathews (97*) & PDMA Cooray (39) | Sri Lanka Under-19s v Bangladesh Under-19s | Bangladesh Krira Shikkha Protisthan Ground, Savar | 2005/06 |
| 83 | M Patel (96) & K Sharma (43) | Canada Under-19s v United Arab Emirates Under-19s | Conaree Sports Club, Conaree | 2021/22 |
| 81* | CF Lopez (42*) & CC Alexander (33*) | West Indies Under-19s v Americas Under-19s | Kadirana Cricket Grounds, Gampaha | 1999/00 |
| 81 | K Ali (54) & CT Tremlett (37) | England Under-19s v West Indies Under-19s | County Ground, Chelmsford | 2001 |
| 80 | S Vesawkar (82) & M Katuwal (30*) | Nepal Under-19s v England Under-19s | MA Aziz Stadium, Chittagong | 2003/04 |
| 80 | Mehrab Hossain (66*) & Suhrawadi Shuvo (42) | Bangladesh Under-19s v Sri Lanka Under-19s | Sinhalese Sports Club Ground, Colombo | 2005/06 |
| 80 | Tasamul Haque (43) & Noor Hossain (66) | Bangladesh Under-19s v Papua New Guinea Under-19s | Fitzherbert Park, Palmerston North | 2009/10 |
| 80 | Mehedi Hasan (67) & Mosabbek Hossain (40) | Bangladesh Under-19s v South Africa Under-19s | City Oval, Pietermaritzburg | 2015 |
| 80 | OJD Pope (87) & DM Bess (34*) | England Under-19s v Sri Lanka Under-19s | Spitfire Ground, St Lawrence, Canterbury | 2016 |
| 79 | Sohail Khan (71) & Naseer Khan Maroofkhil (25) | Afghanistan Under-19s v India Under-19s | Alan Lawson Oval, Johannesburg | 2023/24 |
| 78 | SE Thomas (41) & DC Thomas (53) | West Indies Under-19s v South Africa Under-19s | Kinrara Academy Oval, Kuala Lumpur | 2007/08 |
| 78 | BR McDermott (56*) & TD Andrews (40) | Australia Under-19s v England Under-19s | ICC Cricket Academy Ground, Dubai | 2013/14 |
| 78 | GS Dinusha (46) & WAA Sachintha (64) | Sri Lanka Under-19s v New Zealand Under-19s | Mangaung Outdoor Centre, Bloemfontein | 2019/20 |
| 77 | EG Barnard (33) & J Overton (48) | England Under-19s v South Africa Under-19s | Wally Wilson Oval, Rondebosch | 2012/13 |
| 77 | AM Hardie (85) & PJ Rowe (39) | Australia Under-19s v Pakistan Under-19s | Albert Ground, Melbourne | 2017/18 |
| 77 | DN Phillips (43) & MW Chu (35) | New Zealand Under-19s v South Africa Under-19s | Bay Oval, Mount Maunganui | 2017/18 |
| 77 | SN Liyanage (85) & KHRA de Silva (30) | Sri Lanka Under-19s v Scotland Under-19s | Everest Cricket Club Ground, Georgetown | 2021/22 |
| 76 | [unknown] & [unknown] | India Under-19s v Australia Under-19s | Melville Oval, Hamilton | 1994/95 |
| 76 | M Kaif (60) & Shibsagar Singh (38) | India Under-19s v Australia Under-19s | Supersport Centurion, Centurion | 1997/98 |
| 76 | Tasamul Haque (26) & Noor Hossain (65) | Bangladesh Under-19s v Zimbabwe Under-19s | Sheikh Abu Naser Stadium, Khulna | 2009/10 |
| 75 | [unknown] & [unknown] | India Under-19s v Australia Under-19s | Keenan Stadium, Jamshedpur | 1984/85 |
| 75 | Mahidul Islam (43) & Nayeem Hasan (30) | Bangladesh Under-19s v Afghanistan Under-19s | Sylhet Stadium, Sylhet | 2017/18 |
| 75* | K Chouhan (43*) & RS Ambrish (31*) | India Under-19s v England Under-19s | County Ground, Northampton | 2025 |
