| Balls |
| 65 | J Draper | Australia Under-19s v India Under-19s | Ian Healy Oval, Brisbane | 2025/26 |
| 70 | SE Marsh | Australia Under-19s v Kenya Under-19s | Carisbrook, Dunedin | 2001/02 |
| 81 | CJ Simmons | Australia Under-19s v Kenya Under-19s | Carisbrook, Dunedin | 2001/02 |
| 83 | WJ Sutherland | Australia Under-19s v Sri Lanka Under-19s | P Sara Oval, Colombo | 2018/19 |
| 92 | WG Bosisto | Australia Under-19s v West Indies Under-19s | Port Trust Golden Jubilee Stadium, Visakhapatnam | 2011/12 |
| 97 | CL White | Australia Under-19s v Scotland Under-19s | Carisbrook, Dunedin | 2001/02 |
| 102 | CT Bancroft | Australia Under-19s v West Indies Under-19s | Port Trust Golden Jubilee Stadium, Visakhapatnam | 2011/12 |
| 104 | HT Dixon | Australia Under-19s v England Under-19s | Allan Border Field, Brisbane | 2022/23 |
| 109 | TA Wyllie | Australia Under-19s v Scotland Under-19s | Conaree Sports Club, Conaree | 2021/22 |
| 109 | HD Weibgen | Australia Under-19s v England Under-19s | De Beers Diamond Oval, Kimberley | 2023/24 |
| 110 | CT Bancroft | Australia Under-19s v West Indies Under-19s | ICC Cricket Academy Ground No 2, Dubai | 2011 |
| 113 | CP Jewell | Australia Under-19s v England Under-19s | County Ground, New Road, Worcester | 2015 |
| 115 | SJ Konstas | Australia Under-19s v West Indies Under-19s | De Beers Diamond Oval, Kimberley | 2023/24 |
| 116 | BD Williams | Australia Young Cricketers v West Indies Young Cricketers | Mildura City Oval, Mildura | 1987/88 |
| 117 | SJ Konstas | Australia Under-19s v England Under-19s | The Kent County Cricket Ground, Beckenham | 2023 |
| 119 | BD Williams | Australia Young Cricketers v Pakistan Young Cricketers | Adelaide Oval, Adelaide | 1987/88 |
| 130 | CT Bancroft | Australia Under-19s v Nepal Under-19s | Tony Ireland Stadium, Townsville | 2012 |
| 134 | JR Doran | Australia Under-19s v England Under-19s | Murdoch University West Oval, Perth | 2014/15 |
