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香港電腦奧林匹克競賽 Hong Kong Olympiad in Informatics
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Hong Kong Olympiad in InformaticsHong Kong Girls' Olympiad in InformaticsSoftware Development Invitational Contest & CSP‑J/SNational Olympiad in Informatics in ProvincesOnline JudgeUseful Links
IntroductionRulesAwards2025/26 Apply2025/26 Heat Event2025/26 Final EventPast HKPSOI ResultsPractice Platform
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Started in 1997, Hong Kong Olympiad in Informatics (HKOI) is a prestigious annual programming competition for secondary school students, focusing on algorithmic problem-solving and programming skills, and serving as the preliminary selection contest for the International Olympiad in Informatics (IOI) Hong Kong team.
Organizers
Co-organizers
Introduction Past Results

General Information

Competition Rules (Updated for 2026/27)
Awards
Frequently Asked Questions

HKOI 2026/27

Apply / Nomination Results – Deadline: 27th October 2026 (Tuesday)
Heat Event – 7th November 2026 (Saturday)
Final Event – 5th December 2026 (Saturday)

HKOI 2025/26

Apply / Nomination Results – Deadline: 28th October 2025 (Tuesday)
Heat Event – 8th November 2025 (Saturday)
List of Finalists
Final Event – 6th December 2025 (Saturday)
Competition Results

Prepare

Competition Syllabus
Past Problems
Final Event Solutions
Organizer:
The Hong Kong Association for Computer Education
Education Bureau
Co-organizer:
The Chinese University of Hong Kong
City University of Hong Kong
Email:
The Hong Kong Association for Computer Education,
Kowloon East P.O. Box 68432
Copyright 2026 HKOI Organizing Committee