Pvmoutside was an editor who studied wildlife biology in Massachusetts, and once through-hiked the Appalachian Trail — from their earliest edits in 2006 they primarily edited about birds, and to a lesser extent about other animals and American politics. They wrote hundreds of stubs on animal species, and made thousands of edits to lists of birds around the world, racking up nearly 275,000 edits over their 17 years of editing. They died on August 30, 2023 at the age of 62 — 1 day after their last edit — but their death was not recognised on Wikipedia until 2025.

John Coster-Mullen (21 December 1946 – 24 April 2021) was an American industrial photographer, truck driver and nuclear archaeologist who played an important role in creating a public record of the design of the first atomic bombs. He is known for his critically-acclaimed self-published book Atom Bombs: The Top Secret, Inside Story of Little Boy and Fat Man. His Wikipedia user page has an in-depth biography, written by John himself, and a community-created biography in mainspace. He edited Wikipedia during 2011.

John Arthur Knouse (June 22, 1953 – January 9, 2021) was an American environmental advocate. Born in Michigan, he studied at Juniata College and the University of Louisville and spent the last 24 years of his life in Athens, Ohio. On Wikipedia he edited from 2002 to 2020, creating hundreds of articles, mostly about environmental topics, including the pages about sustainability and overpopulation. He has an obituary on legacy.com.

Roger Moore was a computer pioneer who helped develop the computer language APL which would influence other languages such as C++. Moore began editing Wikipedia in its early days, his first edit was December 2005. He continued to edit until the year he died, in 2019. His Wikipedia interests included computers, opera, geography and the Peasants' Revolt.

Matthew Brown (b. c. 1972, England) was an elected admin and Arbitration Committee member. He was most active on Wikipedia from 2003 through 2008.

Matthew graduated in 1991 from The Henley College (ages 16–19), before attending Imperial College London for a BSe in 1994. He then emigrated to the United States eventually settling in southern California. Matthew began editing Wikipedia in 2003, became an administrator in 2004, and served on the Arbitration Committee from 2006 to 2008. Outside of administrative areas, he often edited articles about historical transport and was a keen photographer. He later became a moderator at TV Tropes. In his professional life he was a Unix and database administrator. During his most active years on Wikipedia he was employed at NBC Interactive and University of Southern California. He died on February 15, 2024 due to complications of kidney failure. (Sources: [1][2])

Martin was a change ringer, born at Sheffield and based in Kent. After joining Wikipedia in 2011, he made more than 17,000 edits, some of which were made at Rochester Cathedral, the cathedral he rang.

He died on October 16, 2024 from prostate cancer.

Michael Arnett Dellinger (August 3, 1957 – March 4, 2025) was an editor from Wheat Ridge, Colorado, who made over 300,000 contributions to the encyclopedia over 18 years, from March 2005 until August 2023. With a massive film collection of over 20,000 films, he was extremely knowledgeable about films, TV, directors and actors, and also knew a great deal about theatre, opera and literature. He was particularly fond of classic British cinema and TV series such as Doctor Who, of which he contributed a good article. Many of his contributions involved maintaining the quality of classic film and TV articles and protecting them. In 2016, Michael was awarded the "Editor of the Week" award based on community nomination. He will be remembered for being the consummate gentleman, who was always incredibly kind and friendly to others and generous with his time. He will be greatly missed by those who knew him and we hope he is sitting with his feet up watching a classic film on a giant screen somewhere up above.

Gayle Suzanne Cook (c. 1959 – 28 May 2025) was an editor from Christchurch, New Zealand, who made 958 contributions to English Wikipedia between June 2019 and May 2025, including participating in a 2022 collaboration about Farewell Spit and a 2025 collaboration on Banks Peninsula. She edited articles about New Zealand, including geographic locations in the South Island, marine reserves, and lighthouses, which reflected her interest in sailing. She also contributed to articles on individuals involved in environmental work, public service, and local history. She attended Wikipedia meetups in Christchurch, and the May 2025 Christchurch WikiCon. She died from an aneurysm while she and her husband were on their yacht.

Smarojit Chakravarty (21 October 1990 – early April 2025) was an editor from Mumbai, India, who contributed mainly to cinema-related articles between April 2011 and April 2025. He received a Master's Degree from the National University of Singapore and lived in Singapore for a number of years. He became a data analyst and later worked in PR. Krimuk, as he became known on Wikipedia, had a great passion for films and actresses of all eras, but was particularly interested in the careers and films of the most successful contemporary actresses and actors in Hollywood and Bollywood. He first promoted the articles on Bollywood actresses Vidya Balan (2012), Rani Mukerji and Deepika Padukone (2013) to Featured status and later became an accomplished writer of top Hollywood actresses, promoting heavyweights such as Catherine Zeta-Jones (2016), Jennifer Lawrence, Jessica Chastain, Amy Adams and Kate Winslet (2017) and Michelle Williams and Brie Larson (2018) to Featured status. In total he contributed 12 FAs, 29 Featured lists (mainly actress filmographies and awards) and 9 Good Articles. In his later years, after moving back to Mumbai, he displayed a love for literature and was a member of a book club, where he interviewed several notable Indian authors and wrote several screenplays for films. Krimuk will be remembered for being a passionate, fun, witty, warm-hearted person who probably should have been a famous actor or director/screenwriter in Bollywood. Wikipedia will be eternally grateful for his quality work on actresses and filmographies.

"Andrew Christopher West (Chinese: 魏安, 31 March 1960 – 10 July 2025) was an English Sinologist. His first works concerned Chinese novels of the Ming and Qing dynasties. His study of Romance of the Three Kingdoms used a new approach to analyse the relationship among the various versions, extrapolating the original text of that novel. West compiled a catalogue for the Chinese-language library of the English missionary Robert Morrison containing 893 books representing in total some 10,000 string-bound fascicules. His subsequent work was in the minority languages of China, especially Khitan, Manchu, and Mongolian. He proposed an encoding scheme for the 'Phags-pa script, which was subsequently included in Unicode version 5.0."

from Wikipedia article Andrew West (linguist)

As a Wikimedian, he primarily contributed to English Wikipedia, Wikisource, and Wikimedia, making tens of thousands of edits. He contributed significantly to his areas of expertise and interest, while also fostering exchanges between Wikipedia editions in different languages. Rest In Peace Mr.BabelStone, and you will be remembered forever by the community and Wikipedia. The Stones will continue building Babel🕯.