Technology is important.
Humanity is essential.

Discover how we ensure humans remain central to compiling knowledge.

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

Donations are secure

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.

280,000+

editors contribute to Wikimedia projects every month

100+ million

media files on Wikimedia Commons and counting

1.5 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.

More about technology

Advocacy

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

More about advocacy

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 over 300 languages by volunteers around the world.

Wikimedia Commons logo

Wikimedia Commons

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

See what we have been up to

ウィキペディアに寄付をお願いしたい7つの理由

ウィキペディアに寄付をくださる皆さんは、さまざまな期待を込めておられることと拝察します。ウィキペディアを運営する非営利団体「ウィキメディア財団」は、お受けした寄付金全額をウィキペディア、ウィキメディアのプロジェクト群、その他の無料の知識の使命に使うことをお約束します。

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Wikimedia Foundation announces award recipients of the Open the Knowledge Journalism Awards

The Wikimedia Foundation, the non-profit that hosts Wikipedia and other Wikimedia projects, is today announcing the award recipients of the first Open the Knowledge Journalism Awards.

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Wikimedians are heroes of free knowledge

Sesame Street Spaghetti Space Chase
Christine Meyer
Editor since 2007, Wikimedia community
Photo of Pranayraj Vangari
Pranayraj Vangari
Editor since 2013, 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.

Donate now

Contact us

Questions about the Wikimedia Foundation or our projects? Get in touch with our team.
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