| Before Name: | Australian Open – Boys' singles |
| Type: | grandslamwc |
| Champ: |  Alexander Blockx |
| Runner: |  Learner Tien |
| Score: | 6–1, 2–6, 7–6(11–9) |
See main article: 2023 Australian Open.
Alexander Blockx won the boys' singles title at the 2023 Australian Open, defeating Learner Tien in the final, 6–1, 2–6, 7–6(11–9).[1]
Bruno Kuzuhara was the defending champion, but was no longer eligible to participate in junior events. He received a wildcard into the men's singles qualifying competition, where he lost to Michael Mmoh in the first round.[2]