Lodewijk is a Wikipedian since 2005, active in the Dutch Wikipedia community. He was part of the international team of Wiki Loves Monuments for many years, and is currently chair of the Wikimania Steering Committee.

Butch Bustria is an Overseas Filipino Worker / Wikimedian (OFW) based in Singapore, He use his spare time in doing Wikimedia projects. His first edit was in December 2005 with a series of edits about the Philippines’ hosting of the Southeast Asian Games. In 2010, he along with 4 others co-founded Wikimedia Philippines, the second Wikimedia chapter in Southeast Asia. Since 2017, Butch had been involved in organizing the ESEAP conferences and summits in Bali, Indonesia, in Bangkok, Thailand, in Sydney, Australia, in Kota Kinabalu, Malaysia and in Manila, Philippines. He is part of the Regional Funds Committee for ESEAP since 2021. He is remembered as well as the Event lead for Wikimania 2023 in Singapore. Since 2020, he is part of the Wikimania Steering Committee and as of this writing, its vice chairperson.

I joined Wikipedia as an author in 2002/2003. I co-founded Wikimedia Germany in 2004, I served on the board of Wikimedia Germany for a few years and I worked for Wikimedia Germany as a full time employee from 2009 to 2014.

I worked at the German National Library, the European Parliament, the German federal Parliament, a Berlin-based NGO on human rights and civil liberties and I recently started working in the policy team of a company.

My last Wikimania was London, it feels like ages ago.

Active Wikipedian since 2006. Lead organizer of Wikimania 2015 and member of Wikimania Steering Committee. Founder of Wikimedia Mexico in 2011, board member since 2024. Nominated to the Wikimedia Foundation Board two times.

I am Project Manager for Involvement and Advocacy at Wikimedia Sverige. In that capacity, I have recently worked primarily with international partnerships, such as with the UN agencies, and advocacy for the open movement at the national, European and international level. I have an M.A. in Comparative Literature, and live in Stockholm.

Isla has been working as a Wikipedian since 2011, activating Africa’s collective voice and experiences on the Wikimedia and Open movements. She co-leads ground-breaking Africa-focused projects such as Wiki Loves Africa, Wiki Loves Women, WikiAfrica Hour, African Environment WikiFocus, ISA Tool, WikiFundi, and WikiChallenge Écoles d’Afrique. She also works part-time as Director of Communications for Open Education Global.

Isla is a project and communications strategist, a Zimbabwean by birth and a Capetonian (South Africa) by adoption. She is passionate about open access to Africa’s knowledge and facilitating the growth of previously under-represented or ‘invisible’ communities to share their stories, experiences, creativity, and heritage with the world. Prior to her involvement in Wikimedia, she worked to promote Africa’s filmmakers, writers, poets, musicians, and artists.

In 2019, Isla was a member of the Advocacy Working Group for the completed Wikimedia Movement Strategy 2030. In 2020, she researched, wrote, and published an analytical report on the motivations, needs, expectations, and philosophical intentions of Creative Commons’ Global Network members. The report is compiled from the thoughts and experiences of 188 Creative Commoners members.

Prior to working within the WikiAfrica movement, she was the Marketing and Communications Manager for the Africa Centre, raising the brand and national profile of event-based arts brands. Prior to that, she worked as a writer to accelerate and support the growth of Africa’s film industry both as a skilled destination and a burgeoning creative force.

I have been a practicing (volunteer) Wikipedian for many years; my home wiki is the Hebrew Wikipedia, but I am also active in Wikidata and the Wikimedia Commons, and I make occasional contributions on the English Wikipedia as well, all under my volunteer account. I have a strong background in software engineering, and an abiding interest in literature, education, open access, linked data, and library science.

At the Foundation, I am working on increasing reach (readers) and participation (editors) in the developing world, through community support as well as partnerships with grantees, other NGOs, and governments.

My main project since 2019 is the WikiLearn online learning environment. Previously, I had worked on the Community Capacity Development program and as a grants program officer.

Iolanda Pensa, volunteer of Wikipedia since 2006, former chair of Wikimedia Italia (2020-2024), former chair of the Wikimania Committee (2017-2025), organiser of Wikimania Esino Lario 2016 and currently national coordinator of GLAMs for Wikimedia Italia. In my work, I am head of the research area "Culture and territory" at the Institute of design at SUPSI University of Applied Sciences and Arts of Southern Switzerland.

Andrew Lih has been a Wikipedia editor since 2003 and is an administrator on English Wikipedia and Wikidata. He is the author of the 2009 book The Wikipedia Revolution: How a bunch of nobodies created the world’s greatest encyclopedia. He is a passionate advocate of collaborative efforts between the cultural and heritage sector and the Wikimedia community. In the United States, he serves as Wikimedian at Large at the Smithsonian Institution, the world's largest museum, education, and research complex. In 2022, he was named one of the first Wikimedia Laureate for his lifetime of work with the Wikimedia movement.

Wikimaniac, Wikidata editor, co-organizer of the first Kiswahili Wikipedia Challenge.
Built the first multilingual offline Wikipedia snapshots, and custom Wikislices, for One Laptop per Child.
A founder of the Public AI Network.

Lead Movement Communications Specialist, working with the Product Safety and Integrity team (PSI; the merged Trust and Safety Product with Product Security) at the Wikimedia Foundation Product and Technology department.

I work on Temporary Accounts, hCaptcha, Incident Reporting System, and many many more PSI projects. See https://wikimania.wikimedia.org/wiki/Wikimania:2025/Meetups/Product_Safety_and_Integrity_says_hi

In addition, I've been a Wikipedian since 2010, and a Polish Wikipedia admin since 2011.