2025 US Open – Boys' singles
| Boys' singles | |
|---|---|
| 2025 US Open | |
| Champion | Ivan Ivanov |
| Runner-up | Alexander Vasilev |
| Score | 7–5, 6–3 |
| Draw | 64 |
| Seeds | 16 |
Ivan Ivanov won the boys' singles title at the 2025 US Open, defeating Alexander Vasilev, 7–5, 6–3. The match made history as the first all-Bulgarian major final ever.
Rafael Jódar was the reigning champion, but was no longer eligible to compete in junior events.