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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.

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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.

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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 fight to protect everyone’s right to access free and open knowledge.

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Projekte

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.

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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.

See what we have been up to

Moscow court upholds order to target Wikipedia content: The Wikimedia Foundation will continue to challenge attempts to curb free knowledge in Russia

Цей пост також доступний українською мовою.Этот пост также доступен на русском языке. On 22 November 2022, a Moscow Court rejected a case filed by the Wikimedia Foundation (“Foundation”) challenging a court verdict to impose a fine on the Foundation for failing to remove “prohibited” information from the Russian Wikipedia article about the Russian Invasion of….

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7 reasons you should donate to Wikipedia

People give to Wikipedia for many different reasons. The Wikimedia Foundation, the nonprofit that operates Wikipedia, ensures that every donation we receive is invested back into serving Wikipedia, Wikimedia projects, and our free knowledge mission.  While many visit Wikipedia on a daily basis, it’s not always obvious what it takes to make that visit possible.….

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Wikimedians are heroes of free knowledge.

May Mohamed Hisham Hashem
May Hachem
Editor since 2013, Wikimedia community
Photo of Armine Aghayan
Arminé Aghayan
Editor since 2013, Wikimedia community
Emily Temple-Wood at Wikimania 2014
Emily Temple-Wood
Editor since 2007, 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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