Following the end of the group stage, the four teams that will compete in the semifinals of the 2026 Southeast Asian U19 Championship have officially emerged. Here are the detailed match schedules for the four strongest teams.
2026 U19 Southeast Asia Semi-final Match Schedule
| Day | Time | Match | Venue |
| June 11 | 16:00 | U19 Thailand vs U19 Cambodia | To be updated |
| 20:00 | U19 Indonesia vs U19 Australia | To be updated |
After the final round of group matches, the four teams that will participate in the semifinals of the 2026 Southeast Asian U19 Championship have been officially determined: U19 Indonesia, U19 Thailand, U19 Australia, and U19 Cambodia. This is a surprising result, as U19 Vietnam, one of the highly rated pre-tournament favorites, was eliminated right from the group stage.
In Group B, U19 Thailand advanced as group winners after a thrilling 3-2 victory over U19 Malaysia. Despite having their lead equalized twice, the young Thai team showed composure to secure all three points thanks to a brace from Kongsri, thereby concluding the group stage with an impressive record. Meanwhile, U19 Malaysia was sadly eliminated despite a decent performance against their direct competitor.
The most dramatic action took place in the group featuring U19 Australia and U19 Cambodia. The Australian representatives had a dream start, leading 2-0 in the first half thanks to goals from Marcus Neill and Alexandro Nunes. However, U19 Cambodia mounted an emotional comeback in the second half. Sreng Sokea pulled one back to make it 1-2 in the 60th minute, and then the Angkor nation equalized at 2-2 in the 83rd minute following an own goal by an Australian player.
The 2-2 draw helped U19 Cambodia secure a semifinal berth as the best second-placed team, simultaneously eliminating U19 Vietnam from the tournament. Meanwhile, U19 Australia still advanced to the last four thanks to their top spot in the group.
Thus, the 2026 Southeast Asian U19 Championship semifinals will feature two highly anticipated matchups: U19 Indonesia will face U19 Cambodia, while U19 Thailand will take on U19 Australia.