| Boys' Singles | |
|---|---|
| 2005 Australian Open | |
| Champion |  Donald Young | 
| Runner-up |  Sun-Yong Kim | 
| Final score | 6–2, 6–4 | 
Gaël Monfils was the defending champion, but did not compete in the Juniors in this year.
Donald Young defeated Sun-Yong Kim (6–2, 6–4) in the final.