| Runs |
Out of |
4s |
6s |
| 102 | 142* | 24 | 1 | | JA Bird | South Africa Under-19s v England Under-19s | Roseworth Terrace, Gosforth | 2018 |
| 112 | 215 | 19 | 6 | | J van Schalkwyk | South Africa Under-19s v Zimbabwe Under-19s | Sunrise Sports Club, Harare | 2025 |
| 94 | 135 | 13 | 7 | | AJN Price | South Africa Under-19s v Zimbabwe Under-19s | Harare Sports Club, Harare | 2010 |
| 80 | 129 | 17 | 2 | | WK Makwetu | South Africa Under-19s v Zimbabwe Under-19s | Wally Wilson Oval, Rondebosch | 2016/17 |
| 78 | 131* | 18 | 1 | | R van Tonder | South Africa Under-19s v West Indies Under-19s | Chatsworth Stadium, Chatsworth | 2017 |
| 86 | 143 | 14 | 5 | | R van Tonder | South Africa Under-19s v Kenya Under-19s | Lincoln No 3, Lincoln | 2017/18 |
| 72 | 143 | 18 | 0 | | AB de Villiers | South Africa Under-19s v England Under-19s | Arundel Castle Cricket Club Ground, Arundel | 2003 |
| 76 | 110 | 16 | 2 | | J Pillay | South Africa Under-19s v West Indies Under-19s | City Oval, Pietermaritzburg | 2017 |
| 78 | 121 | 15 | 3 | | BR Parsons | South Africa Under-19s v Canada Under-19s | Senwes Park, Potchefstroom | 2019/20 |
| 86 | 138 | 11 | 7 | | DT Brevis | South Africa Under-19s v Bangladesh Under-19s | Coolidge Cricket Ground, Coolidge | 2021/22 |
| 80 | 164* | 14 | 4 | | J van Schalkwyk | South Africa Under-19s v Bangladesh Under-19s | Willowmoore Park Main Oval, Benoni | 2025 |
| 76 | 146 | 10 | 6 | | Q de Kock | South Africa Under-19s v Pakistan Under-19s | Boland Park, Paarl | 2011/12 |
| 70 | 126 | 13 | 3 | | Q de Kock | South Africa Under-19s v Namibia Under-19s | Peter Burge Oval, Brisbane | 2012 |
| 64 | 99 | 16 | 0 | | C Fortuin | South Africa Under-19s v England Under-19s | Sahara Park Newlands, Cape Town | 2012/13 |
| 64 | 123* | 13 | 2 | | Q de Kock | South Africa Under-19s v Zimbabwe Under-19s | Northerns-Goodwood Cricket Club Oval, Cape Town | 2011/12 |
| 60 | 90 | 15 | 0 | | C Fortuin | South Africa Under-19s v India Under-19s | Port Trust Golden Jubilee Stadium, Visakhapatnam | 2013/14 |
| 62 | 102 | 14 | 1 | | M Mayet | South Africa Under-19s v Sri Lanka Under-19s | Boland Park, Paarl | 2016/17 |
| 76 | 86 | 7 | 8 | | S Stolk | South Africa Under-19s v Scotland Under-19s | JB Marks Cricket Oval, Potchefstroom | 2023/24 |
| 60 | 156* | 12 | 2 | | JA Rudolph | South Africa Under-19s v Nepal Under-19s | Air Force Ground, Katunayake | 1999/00 |
| 60 | 129* | 12 | 2 | | CN Ackermann | South Africa Under-19s v India Under-19s | Bidvest Wanderers Stadium, Johannesburg | 2009/10 |
| 70 | 98 | 7 | 7 | | AJN Price | South Africa Under-19s v Zimbabwe Under-19s | Northerns-Goodwood Cricket Club Oval, Cape Town | 2010/11 |
| 56 | 103* | 14 | 0 | | MG Coetzee | South Africa Under-19s v England Under-19s | Sahara Park Newlands, Cape Town | 2012/13 |
| 58 | 120* | 13 | 1 | | AK Markram | South Africa Under-19s v Zimbabwe Under-19s | Sheikh Zayed Stadium, Abu Dhabi | 2013/14 |
| 58 | 89* | 13 | 1 | | LP Smith | South Africa Under-19s v Bangladesh Under-19s | City Oval, Pietermaritzburg | 2015 |
| 58 | 117 | 13 | 1 | | D Foxcroft | South Africa Under-19s v New Zealand Under-19s | Sheikh Kamal International Cricket Stadium No 2 Ground, Cox's Bazar | 2015/16 |
| 58 | 91 | 13 | 1 | | AW Louw | South Africa Under-19s v Pakistan Under-19s | City Oval, Pietermaritzburg | 2019 |
| 62 | 100 | 11 | 3 | | JA Bird | South Africa Under-19s v Pakistan Under-19s | City Oval, Pietermaritzburg | 2019 |
| 64 | 112 | 10 | 4 | | JA Bird | South Africa Under-19s v Pakistan Under-19s | Chatsworth Stadium, Chatsworth | 2019 |
| 52 | 120 | 13 | 0 | | J Booysen | South Africa Under-19s v Sri Lanka Under-19s | Fatullah Khan Saheb Osmani Stadium, Fatullah | 2003/04 |
| 52 | 115* | 13 | 0 | | GL Cloete | South Africa Under-19s v Zimbabwe Under-19s | Harare Sports Club, Harare | 2010 |
| 54 | 99* | 12 | 1 | | WK Makwetu | South Africa Under-19s v West Indies Under-19s | Bay Oval, Mount Maunganui | 2017/18 |
| 60 | 97 | 9 | 4 | | DT Brevis | South Africa Under-19s v England Under-19s | Sir Vivian Richards Stadium, North Sound | 2021/22 |
