The 2025 edition of the Online Olympiad in Linguistics will take place on January 26th, from 00:00UTC to 24:00UTC. Participants can begin working on the problems at any time during the contest period. From the moment a participant first sees the test, they have exactly four hours to work on the problems and type in their answers. (Less time will be available for those who start the test after 20:00UTC.)
Any interested person from any country is welcome to participate. The contest is offered in two divisions: one for secondary/high school students and one for those who have graduated from secondary/high school. Participants in both divisions will be working on the same problem set. For participation in any division, you need to register. After your registration is confirmed, you will receive an email with your contest area credentials.
The problem set will be available in the following languages:
- Simplified Chinese
- English
- Japanese
- Korean
- Polish
- Brazilian Portuguese
- Romanian
- Russian
- Thai
- Ukrainian
If you have any questions, please contact us at or via our Facebook page.
Registration