25 years of making the internet just a little bit better, one edit at a time!

15 January 2026, Ali Smith.

On 15 January 2026, Wikipedia will celebrate the 25th anniversary of its founding in 2001. With over 65 million articles across 300+ languages, Wikipedia informs everything from day-to-day life and AI chatbots to journalism and trivia wins.

Join Australia in celebrating what has become the backbone of knowledge on the internet. Head to our virtual birthday card to add your message.

Attend the virtual celebration or watch the stream on Wikipedia’s YouTube channel with Wiki Lovers worldwide!

Wikimedia Australia is the Australian chapter of the international Wikimedia Foundation. As an independent, not-for-profit organisation and registered charity, we support our members, the broader community and partner organisations to contribute to Wikipedia, Wikidata and other Wikimedia platforms through events, training and partnerships.

Join us to make the internet a better place

WikiCon 2026 Canberra Celebrate everything Wiki at Australia's only national Wikimedia conference in April 2026. We'll celebrate 25 years of free knowledge together!

Membership Join a worldwide movement that is transforming the availability of free knowledge and cultural works. Become a member!

Images and media

• 25th Wiki birthday sticker, by Ferfive, CC BY 4.0, via Wikimedia Commons
• WP25 Anthem video, by Wikimedia Foundation CC BY-SA 4.0, via Wikimedia Commons
• WP25 Birthday cake, Wikimedia Foundation staff and contractors, CC BY-SA 4.0, via Wikimedia Commons