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.

Registered teachers will receive an email on Monday 4th March 2024 with details about the Competition Day (Wednesday 6th March), login details for each team and information about downloading the Question Book.

OzCLO 2024 Timeline

OzCLO 2024 registration currently open!

Registration closes

Round 1 Online Regional Competition

Round 2 National Competition

International Linguistics Olympiad, Brasilia

Current competition

All the information about the upcoming competition, including the competition format 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:

ABN 53752617881