• Hong Kong Olympiad in Informatics (HKOI) is an annual programming competition for secondary students.
  • HKOI Online Judge
  • Hong Kong Olympiad in Informatics

HKOI 2021/22 Finalists

The finalists of HKOI 2021/22 have been released.

Note: The Online Judge login details for finalists will be sent to your teacher-in-charge by email soon.

November 23, 2021 9:09 am

Results of SDIC 2021

Results of SDIC 2021 has been announced. HKACE will apply for CSP-J/S certificates on behalf of all winners. Please do not apply for it on your own.

November 6, 2021 1:55 am

HKPSOI 2021/22 is now accepting applications

Details for Hong Kong Primary Schools Olympiad in Informatics (HKPSOI) 2021/22 has been published. The Heat Event will be held from 6th December (Monday) to 17th December, 2021 (Friday) and the Final Event will be held on 5th March, 2022 (Saturday).

We welcome all primary schools to participate in the competition. Application deadline is 19th November, 2021 (Friday).

See instructions for application.

November 1, 2021 8:54 am

HKOI 2021/22 is now accepting applications

Details for Hong Kong Olympiad in Informatics (HKOI) 2021/22 has been published. The Heat Event will be held on 13th November, 2021 (Saturday) and the Final Event will be held on 18th December, 2021 (Saturday).

We welcome all secondary schools to nominate students to the competition. Application deadline is 1st November, 2021 (Monday).

October 4, 2021 1:11 am

SDIC 2021

Hong Kong Secondary Schools Software Development Invitational Contest (SDIC) 2021 Heat Event will be held on 19th September, 2021 (Sunday).

The application deadline is 6th September, 2021 (Monday).

August 23, 2021 8:40 am

HK students triumph at 33rd International Olympiad in Informatics

A team of Hong Kong students has brought home one gold and three silver medals against contestants from 88 countries or regions from all over the world at the 33rd International Olympiad in Informatics (IOI 2021). This is the best result since Hong Kong’s first participation in 1992.

Team members and results

Press Release


From left: Hsieh Chong Ho, Xie Lingrui, Leung Harris, Yeung Man Tsung

June 30, 2021 2:19 pm

Hong Kong Team Wins 1 Gold, 5 Bronzes in APIO 2021

The Hong Kong Team has won 1 Gold Medal and 5 Bronze Medals in the 2021 Asia-Pacific Informatics Olympiad, hosted by Indonesia. In particular, Leung Harris from Diocesan Boys’ School ranked 1st in the competition. Congratulations to the students!

List of winners

May 26, 2021 10:55 pm