Imagine a world in which every single human being can freely share in the sum of all knowledge.

Представьте себе мир, в котором каждый человек может свободно делиться всей суммой накопленных человечеством знаний.

Imaginez un monde dans lequel chaque être humain peut librement prendre part au partage de la totalité des connaissances humaines.

تخيل عالمًا يمكن فيه لكل إنسانٍ أن يشارك بحريةٍ في مجموع المعرفة.

Imagina un mundo en el que todo ser humano pueda compartir libremente la suma de todo el conocimiento.

The nonprofit Wikimedia Foundation provides the essential infrastructure for free knowledge. We host Wikipedia, the free online encyclopedia, created, edited, and verified by volunteers around the world, as well as many other vital community projects. All of which is made possible thanks to donations from individuals like you. We welcome anyone who shares our vision to join us in collecting and sharing knowledge that fully represents human diversity.

Protect and sustain Wikipedia

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1

Wikimedia projects belong to everyone

You made it. It is yours to use. For free. That means you can use it, adapt it, or share what you find on Wikimedia sites. Just do not write your own bio, or copy/paste it into your homework.

2

We respect your data and privacy

We do not sell your email address or any of your personal information to third parties. More information about our privacy practices are available at the Wikimedia Foundation privacy policy, donor privacy policy, and data retention guidelines.

3

People like you keep Wikipedia accurate

Readers verify the facts. Articles are collaboratively created and edited by a community of volunteers using reliable sources, so no single person or company owns a Wikipedia article. The Wikimedia Foundation does not write or edit, but you and everyone you know can help.

4

Not all wikis are Wikimedia

The word “wiki” refers to a website built using collaborative editing software. Projects with no past or existing affiliation with Wikipedia or the Wikimedia Foundation, such as Wikileaks and wikiHow, also use the term. Although these sites also use “wiki” in their name, they have nothing to do with Wikimedia.

300,000+

editors contribute to Wikimedia projects every month

82+ million

media files on Wikimedia Commons

1.8+ billion

unique devices access Wikimedia projects every month

Research

We conduct our own research and partner with researchers worldwide to address change in society and technology.

More about research

Technology

From site reliability to machine learning, our open-source technology makes Wikipedia faster, more reliable, and more accessible worldwide.

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Advocacy

We conduct our own research and partner with researchers worldwide to address change in society and technology.

More about advocacy

Projects

Collaborative projects are the core of the Wikimedia movement.

Our volunteers build tools, share photos, write articles, and are working to connect all the knowledge that exists.

Wikipedia puzzle globe

Wikipedia

Free encyclopedia written in 300 languages by volunteers around the world.

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Wikimedia Commons

The world’s largest free-to-use-library of illustrations, photos, drawings, videos and music.

News Neues

See what we have been up to

Wikimedia Enterprise announces Google and Internet Archive as its first customers; allows new customers to self sign-up for free trials

June 21, 2022, San Francisco, CA, USA ― Wikimedia Enterprise, a first-of-its-kind commercial product designed for companies that reuse and source Wikipedia and Wikimedia projects at a high volume, today announced its first customers: multinational technology company Google and nonprofit digital library Internet Archive.  Wikimedia Enterprise was recently launched by the Wikimedia Foundation, the nonprofit….

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Wikimedia Foundation welcomes Selena Deckelmann as Chief Product and Technology Officer

13 June 2022, San Francisco  — The Wikimedia Foundation today announced the appointment of Selena Deckelmann as Chief Product and Technology Officer. Selena is currently serving as Senior Vice President of Mozilla, where she was responsible for Firefox. She will officially join on August 1, 2022. Selena will lead the product and technology teams at….

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Profiles

Wikimedians are heroes of free knowledge.

May Mohamed Hisham Hashem
May Hachem
Editor since 2013, Wikimedia community
Vitor Mazuco
Vitor Mazuco
Editor since 2009, Wikimedia community
Sam Oye - Wiki Indaba 2017
Sam Oyeyele
Editor since 2011, Wikimedia community

Throughout history, knowledge has been controlled by a powerful few. Wikipedia needs knowledge from all languages and cultures. The internet has become the default for accessing information—women, people of color, and the global south remain underrepresented. We invite you to help correct history.

Help us unlock the world’s knowledge.

As a nonprofit, Wikipedia and our related free knowledge projects are powered primarily through donations.

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