| Wkt |
| 3 | 221 | GL Cloete (115*) & AJN Price (135) | South Africa Under-19s v Zimbabwe Under-19s | Harare Sports Club, Harare | 2010 |
| 1 | 216 | MP Breetzke (98) & WK Makwetu (129) | South Africa Under-19s v Zimbabwe Under-19s | Wally Wilson Oval, Rondebosch | 2016/17 |
| 2 | 213 | MP Breetzke (115) & R van Tonder (117) | South Africa Under-19s v New Zealand Under-19s | Hagley Oval, Christchurch | 2017/18 |
| 1 | 212 | Q de Kock (126) & CJ Bowes (115) | South Africa Under-19s v Namibia Under-19s | Peter Burge Oval, Brisbane | 2012 |
| 1 | 199 | C Fortuin (99) & MG Coetzee (103*) | South Africa Under-19s v England Under-19s | Sahara Park Newlands, Cape Town | 2012/13 |
| 1 | 198 | J Pillay (110) & MP Breetzke (106) | South Africa Under-19s v West Indies Under-19s | City Oval, Pietermaritzburg | 2017 |
| 2 | 181 | J van Schalkwyk (164*) & Muhammed Bulbulia (62) | South Africa Under-19s v Bangladesh Under-19s | Willowmoore Park Main Oval, Benoni | 2025 |
| 3 | 178 | J van Schalkwyk (215) & J Rowles (76) | South Africa Under-19s v Zimbabwe Under-19s | Sunrise Sports Club, Harare | 2025 |
| 4 | 169* | R van Tonder (89*) & MB van Buuren (92*) | South Africa Under-19s v Sri Lanka Under-19s | Recreation Ground, Oudtshoorn | 2016/17 |
| 2 | 160 | GC Smith (74) & JA Rudolph (156*) | South Africa Under-19s v Nepal Under-19s | Air Force Ground, Katunayake | 1999/00 |
| 1 | 159 | Q de Kock (94) & KK Jennings (84*) | South Africa Under-19s v Zimbabwe Under-19s | Harare Sports Club, Harare | 2010 |
| 2 | 158* | AK Markram (105*) & KR Christoffels (56*) | South Africa Under-19s v Afghanistan Under-19s | Sharjah Cricket Association Stadium, Sharjah | 2013/14 |
| 6 | 153 | D Elgar (79) & C Kieswetter (80) | South Africa Under-19s v United States of America Under-19s | P Saravanamuttu Stadium, Colombo | 2005/06 |
| 3 | 152 | BR Parsons (84) & LJ Beaufort (85) | South Africa Under-19s v United Arab Emirates Under-19s | Mangaung Outdoor Centre, Bloemfontein | 2019/20 |
| 2 | 149* | Q de Kock (123*) & GL Cloete (59*) | South Africa Under-19s v Zimbabwe Under-19s | Northerns-Goodwood Cricket Club Oval, Cape Town | 2011/12 |
| 1 | 147 | Q de Kock (133) & MG Coetzee (55) | South Africa Under-19s v Pakistan Under-19s | Stellenbosch University Ground, Stellenbosch | 2011/12 |
| 4 | 145* | AK Markram (120*) & Y Valli (53*) | South Africa Under-19s v Zimbabwe Under-19s | Sheikh Zayed Stadium, Abu Dhabi | 2013/14 |
| 5 | 141 | DJ Jacobs (63) & RT Bailey (69) | South Africa Under-19s v New Zealand Under-19s | Lincoln Green, Lincoln | 2001/02 |
| 3 | 141 | JD Christensen (101) & R van Tonder (79) | South Africa Under-19s v Sri Lanka Under-19s | Wally Wilson Oval, Rondebosch | 2016/17 |
| 2 | 139 | KK Jennings (72) & AJN Price (98) | South Africa Under-19s v Zimbabwe Under-19s | Northerns-Goodwood Cricket Club Oval, Cape Town | 2010/11 |
| 1 | 138 | DJ Jacobs (76) & SC Cook (103) | South Africa Under-19s v Bangladesh Under-19s | Colin Maiden Park, Auckland | 2001/02 |
| 5 | 138* | S Pillay (91*) & MG Coetzee (51*) | South Africa Under-19s v Zimbabwe Under-19s | Sahara Park Newlands, Cape Town | 2011/12 |
| 1 | 134 | J Symes (63) & PD Daneel (59) | South Africa Under-19s v Scotland Under-19s | Nondescripts Cricket Club Ground, Colombo | 2005/06 |
| 1 | 131 | GC Smith (59) & AG Puttick (75) | South Africa Under-19s v Americas Under-19s | Welagedara Stadium, Kurunegala | 1999/00 |
| 7 | 131 | D Marais (65) & J James (47) | South Africa Under-19s v West Indies Under-19s | JB Marks Cricket Oval, Potchefstroom | 2023/24 |
| 3 | 130* | DA Hendricks (75*) & CN Ackermann (64*) | South Africa Under-19s v United States of America Under-19s | Queenstown Events Centre, Queenstown | 2009/10 |
| 1 | 129* | LP Smith (64*) & K Verreynne (64*) | South Africa Under-19s v Scotland Under-19s | Sheikh Kamal International Cricket Stadium No 2 Ground, Cox's Bazar | 2015/16 |
| 4 | 129 | JA Bird (142*) & WK Makwetu (53) | South Africa Under-19s v England Under-19s | Roseworth Terrace, Gosforth | 2018 |
| 1 | 129 | A Lagadien (53) & Muhammed Bulbulia (75) | South Africa Under-19s v Zimbabwe Under-19s | Harare Sports Club, Harare | 2025 |
| 2 | 128* | DA Hendricks (107*) & DJ White (72*) | South Africa Under-19s v New Zealand Under-19s | Lincoln No 3, Lincoln | 2009/10 |
