Wikimedia Foundation

Ensuring free knowledge for future generations

Access to knowledge is a fundamental human right. The Wikimedia Endowment is our enduring commitment to a world of freely shared knowledge, now and in perpetuity.

We believe that knowledge is a foundation. It is a foundation for human potential, a foundation for freedom, a foundation for opportunity. Wikipedia is the world’s largest free knowledge ecosystem — a public trust for the common good — built by people, for people.

Giving to the Endowment

*Please note: Due to the ongoing COVID-19 pandemic, our check donation processing is delayed. If possible, we encourage you to make your gift online. We apologize for any inconvenience.

Your gift helps us preserve, build, and ensure the future of free knowledge for future generations. Join us in creating a lasting legacy for free knowledge and make a gift to the Wikimedia Endowment today.

Giving Today

Your gift today will help ensure that Wikipedia is there when you need us. We ask you, humbly, to help Wikipedia keep thriving not just for 25 years or 50 years, but forever.

Giving Tomorrow

The Wikipedia Legacy Society is ensuring that Wikipedia provides free knowledge to the world, forever. Each member has committed to making a legacy gift to the Wikimedia Endowment through estate planning.

Want to join the Wikipedia Legacy Society? Take the pledge today and make a planned gift to the Wikimedia Endowment.

To learn more about joining the Wikipedia Legacy Society and your estate planning options, request our guide to planned giving.

Would you like assistance in developing a will? Our partner, FreeWill, can help you write one free of charge. The process takes about 20 minutes.

Why an Endowment?

Like other public trusts, such as universities and libraries, the Wikimedia Foundation is caretaker of an immense repository of knowledge—and thereby humanity and culture—with the imperative of increasing and ensuring access for all.

The Wikimedia Endowment will conserve and expand the world’s largest free knowledge ecosystem. We strongly believe that the Endowment is not only a necessary safeguard for the millions of articles, media, and resources created by Wikipedia contributors, but also a springboard for innovating the way we curate and deliver knowledge to the world.

Building the Wikimedia Endowment includes long-term strategic planning and investment in the Wikimedia vision, Wikipedia, the Wikimedia Foundation and our volunteers, donors, partners and affiliates around the world. When we reach our initial funding goal of $100 million, Wikimedia Endowment income will help realize a world in which every single human being can freely share in the sum of all knowledge.

"Wikipedia stands alone in the online world, providing information and knowledge to anyone, anywhere, without cost."
— Annette Campbell-White, Wikimedia Endowment Advisory Board Member

Our projects

Wikipedia was launched in 2001 with a big vision: “Imagine a world in which every single human being can freely share in the sum of all knowledge.” Now, with over 50 million articles in 300 languages and serving more than 500 million users every month, it is the only non-profit site in the top ten most visited on the web.

Wikimedia also supports a range of additional offerings to further enrich the commons, providing vital resources, knowledge and infrastructure.

Select projects supported by the endowment:

A free and open storage for the structured data of all Wikimedia projects including Wikipedia, Wikivoyage, Wikisource, and others

A multilingual repository for free photographs, diagrams, maps, videos, animations, music, sounds, spoken texts, and other free media

The open source package that powers Wikipedia and many other wikis on the web

The world’s largest freely available and openly editable online encyclopedia

A multilingual free content dictionary currently in 170 languages

"The Wikimedia Endowment is a springboard for growth and innovation in how we curate and deliver knowledge to the world for generations to come."
— Jimmy Wales, Wikipedia Founder and Wikimedia Endowment Advisory Board Member

Advisory Board

The Wikimedia Endowment Advisory Board – comprised of leaders from finance, education, technology, and business – is guiding the endowment as it grows and supports the Wikimedia projects in perpetuity.

Our benefactors

Thank you to our benefactors for their generous donations to the Wikimedia Endowment and for providing free access to knowledge to the world.

* denotes deceased donor

$5 million+

$2 million+

$1 million+




Wikipedia Legacy Society

Thank you to Wikipedia Legacy Society members for pledging a legacy gift to the Wikimedia Endowment — ensuring Wikipedia’s future, in perpetuity.

* denotes deceased donor

Contact us

For more information about the Wikimedia Endowment or how you can support it with a planned or outright gift, please contact us at, or call us at +1 415-758-8574.