Wikimedia Foundation

Wikimedia Foundation horizontal logo

  • The more people take part, the better the internet’s knowledge gets.

    Volunteer

    From editing to organizing, find out how you can get involved.

    Advocate

    Help us protect Wikipedia and the people who make it possible.

  • Stay up to date on our efforts to protect free knowledge.

    Find out more

The Wikimedia Foundation is a donor-funded, US 501(c)(3) nonprofit organization established in the United States under the US IRS Code Section 501(c)(3). Our tax ID number is 20-0049703. Here, you can read our financial reports and our Form 990s.

2024-2025

2023-2024

2022-2023

2021-2022

2020-2021

2019-2020

2018-2019

2017-2018

2016-2017

2015-2016

2014-2015

2013-2014

2012-2013

2011-2012

2010-2011

2009-2010

2008-2009

2007-2008

2006-2007

2005-2006

Audit Committee

Grant review protocols

Investment policy

Tax deductibility

Wikipedia edit-a-thon Art+Feminism at the Royal Armoury in Stockholm

Help us unlock the world’s knowledge.

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

Contact us

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

Contact

Follow

Photo credits

Rena Kokalari

Image by Rena Kokalari

Wikimedia Foundation Logo

Wikimedia Foundation

Eclos Production

Wikipedia edit-a-thon Art+Feminism at the Royal Armoury in Stockholm

Jens Mohr

Read the original on wikimediafoundation.org ↗