2026 Elimination Round

Open participation
20 March 2026 (FRI) at 6:00 PM to 30 March 2026 (MON) at 6:00 PM
Online

2026 Semi-Final Round

40 participants: Top of Eliminations Round
25 April 2026 (SAT)
University of the Philippines Diliman

2026 Final Round

40 participants:  Awardees in the 2025 Finals + Top of the Semi-Final Round
26 April 2026 (SUN)
University of the Philippines Diliman OR Ateneo de Manila University

2026 APIO

30 participants: Delegation selected according to Finals performance and training activity
9 May 2026 (SAT)
Ateneo de Manila University

2026 ASEAN-wide Team Selection Test

15 participants: Delegation selected according to Finals performance and training activity
23-24 May 2026 (SAT-SUN)
Ateneo de Manila University

2026 IOI In-House Training

15 participants: Members selected according to Finals performance and training activity
Unlike previous years, the Team Selection Test will not be conducted at this time.
It is purely a training activity.
25 June 2026 (THU) to 28 June 2026 (SUN)
Venue TBD

2026 IOI

4 participants: Delegation selected by some weighted sum—primarily according to ASEAN TST performance, secondarily according to APIO and Finals performance
9 August 2026 to 16 Aug 2026 (SUN–SUN)
Tashkent, Uzbekistan