WIKIMEDIA FOUNDATION INC
AI Summary
WIKIMEDIA FOUNDATION INC is a nonprofit focused on adult education that supports Wikipedia, its sister projects, and the Wikimedia community in service of free knowledge. For filing year 2025, it reported an operating budget of $160.7M and total revenue of $205.4M, with notable support from ALFRED P SLOAN FOUNDATION ($10.3M, 2024), WIKIMEDIA ENDOWMENT ($8.3M, 2025), and TIDES ADVOCACY ($3.2M, 2023).
Mission Statement
WIKIMEDIA FDN SUPPORTS WIKIPEDIA AND ITS SISTER PROJECTS, (SEE SCHEDULE O FOR MORE)AND THE WIKIMEDIA COMMUNITY TO HELP THE WORLD SHARE IN FREE KNOWLEDGE.
Cause Areas
1
Adult education
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Charity Verification Snapshot
IRS EO Business Master File Status
Listed as tax-exempt
IRS Pub 78 Status
Eligible for tax-deductible gifts
IRS Revocation Status
Not in Automatic Revocation of Exemption List
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- 1.2K funders
- 81 board & team members
- 11 historic 990s & financials
- 6-year operating budget trend
Frequently Asked Questions
What is WIKIMEDIA FOUNDATION INC’s budget?
In 2024, WIKIMEDIA FOUNDATION INC reported an annual operating budget of around $151.6 million. More detailed financial information is available to registered users.
What causes does WIKIMEDIA FOUNDATION INC support?
WIKIMEDIA FOUNDATION INC supports work in Adult education.
Where does WIKIMEDIA FOUNDATION INC operate?
WIKIMEDIA FOUNDATION INC is headquartered in SAN FRANCISCO, CA.
Who funded WIKIMEDIA FOUNDATION INC recently?
In 2025, WIKIMEDIA FOUNDATION INC received grants from AMERICAN ONLINE GIVING FOUNDATION INC, CHARITIES AID FOUNDATION AMERICA, and DW GORE FAMILY FOUNDATION. More information on this organization’s funders is available to registered users.
What is the largest grant WIKIMEDIA FOUNDATION INC received in 2024?
The largest grant to WIKIMEDIA FOUNDATION INC in 2024 exceeds $2.7 million.