1999 US Open – Boys' singles
| Boys' singles | |
|---|---|
| 1999 US Open | |
| Champion | Jarkko Nieminen |
| Runner-up | Kristian Pless |
| Score | 6–7, 6–3, 6–4 |
David Nalbandian was the defending champion, but did not compete this year.
Finnish player Jarkko Nieminen defeated Danish first seed Kristian Pless in the all-Nordic final, 6–7, 6–3, 6–4.