The Australian Computational and Linguistics Olympiad (OzCLO) is a volunteer-run contest about language for secondary school students. The contest challenges students to develop their own strategies in teams of four to solve problems about fascinating real languages.

OZCLO 2023 Timeline

January 16

Registrations open

February 24

Registrations closed

March 1

Round 1 Online Competition

March 22

Round 2 Offline Competition

Current competition

All the information about the upcoming competition, including the format of the competition and important dates.


Register your students for the upcoming contest.


Find training material and past problems here.

Past competitions

Competition details and results for past years.

About us

How OzCLO works, and who we are.

OzCLO on social media: