2026 Australian Open – Boys' singles

Žiga Šeško won the boys' singles title at the 2026 Australian Open, defeating Keaton Hance in the final, 4–6, 6–3, 6–4. Šeško became the first Slovenian male player to win a major title in any discipline, and the first Slovene to win any major title since Kaja Juvan at the 2017 Wimbledon Championships girls' doubles.

Henry Bernet was the reigning champion, but was no longer eligible to participate in junior events. He received a wild card into the men's singles qualifying, but lost to Pablo Llamas Ruiz in the first round.

By qualifying for the main draw, Ntungamili Raguin became the first player representing Botswana, male or female, to contest a Grand Slam main draw in history. By reaching the third round, he became the first African boy to reach the round of 16 at the Australian Open since Eliakim Coulibaly in 2020. Raguin eventually fell to the second seed, Luís Guto Miguel.