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New video docuseries celebrates the humans who make knowledge on Wikipedia possible; new tech partnerships highlight Wikipedia's value in age of AI.

Join Wikipedia’s virtual 25th birthday party! Frequently asked questions Wikipedia is a quarter of a century old Wikipedia officially turned 25 on 15 January 2026. With over 65 million articles across 300+ languages, Wikipedia informs everything from day-to-day life and AI chatbots to journalism and trivia wins.

Today, the Wikimedia Foundation, the global nonprofit that hosts Wikipedia, announced that two new members have joined its Board of Trustees: Michał Buczyński and Bobby Shabangu. Both were elected through the 2025 community and affiliate selection process, during which contributors across the Wikimedia movement voted to fill two open seats. The Board of Trustees includes….

The Wikimedia Foundation today announced the appointment of Bernadette Meehan as Chief Executive Officer.

Wikipedia2025 year in review Wikipedia is the largest knowledge resource ever assembled in the history of the world, and it’s freely available to everyone everywhere. It’s there when you want to learn about our changing world, win a bet among friends, or answer a curious child’s question. Here’s a review of 2025 through the lens….

New Wikipedia data shows the events, people, movies, and more that captured global attention in 2025.

Here is a fun fact for your next party: Of the top-ten most-visited websites in the world, Wikipedia is the only one to be run by a nonprofit: the Wikimedia Foundation.

For over almost 25 years, Wikipedia has grown to become the backbone of knowledge on the internet. What started as a wildly ambitious and probably impossible dream is now an essential knowledge resource for humanity.

Wikipedia is turning 25 and we’re celebrating together! Your guide to the celebration For 25 years, people from every corner of the world have built, shared, and shaped what has become the backbone of knowledge on the internet.  Thank you for being here to celebrate this incredible milestone with us.  We’ve created this  page to….

On Wikipedia, disagreement is never a sign of failure. It’s evidence that people care deeply about getting the facts right.