Wikimedia Foundation’s cover photo
Wikimedia Foundation

Wikimedia Foundation

Software Development

San Francisco, CA 99,546 followers

Imagine a world in which every single human being can freely share in the sum of all knowledge.

About us

About the Wikimedia Foundation The Wikimedia Foundation is the nonprofit organization that operates Wikipedia and the other Wikimedia free knowledge projects. Our vision is a world in which every single human can freely share in the sum of all knowledge. We believe that everyone has the potential to contribute something to our shared knowledge, and that everyone should be able to access that knowledge freely. We host Wikipedia and the Wikimedia projects, build software experiences for reading, contributing, and sharing Wikimedia content, support the volunteer communities and partners who make Wikimedia possible, and advocate for policies that enable Wikimedia and free knowledge to thrive. The Wikimedia Foundation is a charitable, not-for-profit organization that relies on donations. We receive donations from millions of individuals around the world, with an average donation of about $15. We also receive donations through institutional grants and gifts. The Wikimedia Foundation is a United States 501(c)(3) tax-exempt organization with offices in San Francisco, California, USA.

Website
https://wikimediafoundation.org
Industry
Software Development
Company size
501-1,000 employees
Headquarters
San Francisco, CA
Type
Nonprofit
Founded
2003
Specialties
Non-Profit, Free knowledge, Open Source Culture, Internet, Technology, Mobile, Open Source, Education, Free Knowledge , and Wikipedia

Locations

Employees at Wikimedia Foundation

Updates

  • To celebrate and grow the Wali language, spoken in Ghana, the Wali Wikimedians Community came together for the Wali Mash-Up Edit-a-thon. Over the course of a month, participants created more than 220 new Wikipedia articles, improved hundreds more, added nearly 200,000 words, and shared their knowledge through photos and media. This edit-a-thon amplified narratives, ensuring that Africa’s voices are represented online, and equipping students and young volunteers with digital skills to shape their community’s story. With expert guidance, local leadership, and the energy of young contributors, the event highlighted the impact of partnerships in tackling content gaps and misinformation. Learn more ➡️ https://w.wiki/_njL2

    • A group of people stand together outside a building, some wearing T-shirts with the words "Wikipedia belongs in education." The text on the image reads: "Our Community. Language experts and volunteers are helping to strengthen the Wali language on Wikipedia." Credit: Zakaria Tunsung, CCO.
  • Looking to explore the vast world of knowledge on the go? The official Wikipedia app brings the power of the world's largest free encyclopedia to your fingertips. Developed by the Wikimedia Foundation, the app offers a personalized and user-friendly experience for reading Wikipedia. The Android and iOS apps allow readers to find geotagged articles near their current location. That means you can learn about a nearby landmark just by opening the Wikipedia app. You can also organize articles into lists and access them while offline using the apps’ Reading List feature. Download the app via the appropriate app store (for example, Google Play or App Store) and learn more ➡️ https://w.wiki/Cfyd

  • What is trustworthy information? Science, journalism, academia, and other institutions once seen as stewards of knowledge face declining levels of public trust. At the same time, people are turning to online spaces and personalities that feel more relatable, even if they are less reliable. To rebuild collective trust in knowledge, we need consensus on what trustworthy information should look like. Over the last 25 years, Wikipedia has managed to build global trust thanks to three simple but powerful policies: neutral point of view; verifiability; and no original research. Learn more about each of these standards ➡️ https://lnkd.in/dChSgbAk 

    • Circumpolar stars in star trails at the La Hague lighthouse, in France. Text says: The 3 building blocks of trustworthy information. Wikipedia has earned global trust thanks to these simple but powerful policies.
  • Celebrating culture through play! At Expo 2025 in Osaka, Japan, Wikimedia Community User Group Malaysia showcased Roots & Relics, a Wikipedia-based card game exploring Indigenous life and biodiversity. The interactive sessions invited participants from Japan and beyond to learn through play, matching root materials with the tools made from them, all linked to Wikipedia articles for deeper exploration. Over three sessions, attendees engaged hands-on with both the game and the actual apparatuses featured in it, discovering Malaysia’s rich heritage in a fun and immersive way. This project builds on the award-winning WikiKata initiative and highlights how Wikimedia projects can move beyond edit-a-thons to inspire interactive learning. A proud moment for the Malaysian community on the global stage, showing the power of free knowledge and creativity in preserving culture. Learn more about the game ➡️ https://w.wiki/FT4v

  • In recognition of the pivotal role that Wikipedia and the Wikimedia movement play in our world, Wikimedia Deutschland e. V. Board Chair, Alice Wiegand, will receive the Order of Merit of the Federal Republic of Germany. This is the highest possible recognition from the German government, a testament to Alice's 20+ year journey of supporting free access to knowledge worldwide. Alice will be honored together with 24 others for "outstanding contributions to the common good". The ceremony will be livestreamed this Wednesday, 1 October, in German ➡️ https://lnkd.in/d_8yY__y

  • Wikipedia has been named one of the most iconic companies in Internet history 🎉 "The Webby 30", a new curated list from The Webby Awards, spotlights influential companies and organizations that drive creativity, connection, and culture in the digital world. Since its founding in 2001 with a mission to capture all the world’s knowledge, Wikipedia has become the default, trustworthy reference for billions of people worldwide. It has sparked a movement that has grown to include images, videos, and data that help give a peek into lives, languages, and cultures across the globe. All of this is possible thanks to the Wikimedia community – the volunteers, editors, donors, and readers who have supported this project for nearly 25 years. Learn more about how Wikipedia became the "web’s public memory, written by everyone" ➡️ https://lnkd.in/eM68UTJK

    • Text says: Recognized as One of the Most Iconic Companies in Internet History: Wikipedia. Image includes logos for The Webby 30 and the 30th Annual Webby Awards.
  • Africa's food, through the lens 🌍📷 The winners of the Wiki Loves Africa 2025 photo contest have been announced, and they tell the story of food through this year's theme, "Farm to Plate". Photographers captured the journey of food across the continent from fields to kitchens, markets to meals, and through the beauty that exists in everyday labor and community life. First place went to User:Ayorinde Ogundele from Nigeria, whose aerial shot of a tomato market in Lagos bursts with color and life. In second place, User:AabdulazimAabdulazim from Egypt showed a farmer guiding a donkey heavy with fresh harvest. Third place was awarded to User:MediaMOF from Nigeria, who captured grains suspended in mid-air, part of the rhythmic intensity of rice milling in Abakaliki, Nigeria. Rounding out the photo winners, User:Summering2018 from Egypt captured the joy of three children surrounded by corn, their laughter as striking as the crop itself. Beyond photography, the contest also celebrated video and audio winners who brought local dishes, rice fields, and the sounds of food preparation to life. Together, these stories reveal the many ways food connects Africa’s farms, markets, and families. Learn more about this edition of the competition ➡️ https://w.wiki/_nf2G

  • When Mohammed Qays, a science and math teacher from Iraq, first began editing Wikipedia, his enthusiasm may have outpaced his understanding of the rules. He made changes to Wikipedia articles that were flagged as vandalism. He was blocked three times by administrators. Each block felt discouraging, but instead of walking away, Mohammed chose to learn: studying editing policies, community norms, and the expectations of reliable sourcing. That persistence paid off. Within three years, he had transformed from a newcomer into a respected contributor. Then came a surprise Mohammed still recalls with astonishment: he was nominated for an administrator role on Arabic Wikipedia by the very same editor who had previously blocked him three times. Today, Mohammed serves as an administrator, helping to protect pages, review edits, and welcome new contributors. His journey is a reminder that Wikipedia thrives not on perfection, but on growth, second chances, and the belief that anyone can evolve from a curious beginner to a trusted steward of free knowledge. The safeguards in place are meant to elevate knowledge, not suppress it. Mohammed's journey is proof that they work. Read the story in Mohammed's own words ➡️ https://w.wiki/FFbm

  • Launched in 2012, Wikidata is a free, multilingual database that turns data points into structured data – dates, places, relationships, coordinates – making them both human-readable and machine-readable. Instead of long paragraphs, Wikidata stores knowledge as statements, each one verifiable and reusable across projects. Wikidata quietly powers Wikipedia’s infoboxes, supports academic research, fuels voice assistants, and connects datasets across languages and disciplines. With more than a billion data points contributed by volunteers worldwide, it has become one of the most significant repositories of open knowledge on the planet. In his article "How Wikidata Is Coding for Humanity", journalist Stephen Harrison spoke with Lydia Pintscher of Wikimedia Deutschland e. V., who explained: "Wikidata is an open project where people contribute similar to Wikipedia, but instead of text … people are collecting data such as the number of inhabitants of a country, or the current head of government". Every fact added strengthens the foundation for both human understanding and technological innovation. Harrison reflects that he always knew Wikidata was "the data-driven dimension of Wikipedia", but its practical impact often seemed abstract until these conversations revealed how deeply it underpins knowledge infrastructure. Check out the interview ➡️ https://lnkd.in/e3AQhWWb

    • Colorful illustration featuring “Wikidata", showing people connecting data through pipes and devices. Text says: The open, collaborative Wikidata model is helping bridge languages, preserve information, and connect datasets across the world. Stephen Harrison, 4 August 2025

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Funding

Wikimedia Foundation 17 total rounds

Last Round

Grant

US$ 2.1M

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