This is both a memorial and listing of Wikimedia editors who have passed away. Naturally, this list is largely incomplete, and any additions are very welcome and appreciated. If you are aware of an undocumented deceased editor, please add them to the list, along with a short biography if possible.
Purpose of this list 
The purpose of this list is to provide a reminder of those who have passed on and to remember the contributions these editors made to the success of Wikipedia.
Please do not add people to this list who were never an integral part of the community. People in this list should have made at least several hundred edits or be known for substantial contributions to certain articles. Do not add people unless you have confirmed information that they are deceased.
Deceased Wikipedians 
Aaron Swartz 
Advance (Ad) 
Arístides Herrera Cuntti 
Antonín Vítek (User:Avitek) died on February 28th, 2012, a month after his 72nd birthday. Well known scientist an propagator of cosmonautics, author of the biggest database of artificial objects in space, has been long time highly active editor of Czech Wikipedia, where among many other articles from his area he also submitted and maintained exhaustive List of minor planets. The minor planet 30253 Vítek has been named after him.
Avtandil Abduladze (ავთანდილ) 
Avtandil Abuladze (1958-2005) was a Georgian mathematician, linguist and very early contributor to georgian and Esperanto Wikipedias (since February, 2002). He produced an online "Monda FaktoLibro" ("world facts book" with many files about all countries and many ethnic groups in the world) that he entirely copied to Esperanto Wikipedia and so had been one of the first significant contributions to it as it started in 2002.
Georgian Wikipedia made a memorial to him at w:ka:მომხმარებელი:ავთანდილ.
Bader (Baderimre) 
Caroline Thompson 
Caroline Thompson, a Wikipedian who primarily edited articles relating to quantum mechanics, died on February 8, 2006, according to her family. The cause of her death was cancer. Thompson, who had written papers on the subject while a student at the University of Wales, Aberystwyth, had edited sporadically in the months leading up to her death, last editing on January 10, 2006. She also maintained a website on her theories regarding physics.
Scott Laws died of colon cancer on September 14, 2007. He had been a long-term Wikipedian, editing since April 2005 and accumulating over 3,000 edits as well as 23 contributions to five other Wikimedia projects. Among the articles he edited were Imperial Japanese Navy, Horcrux, and Nuclear power. Laws was an alumnus of Hickman High School and Missouri University and worked for Microsoft's Hotmail in Silicon Valley, Calif, until he was diagnosed with cancer in 2004. He was 30 years old.
David Shear 
David Shear (David Shear) received a B.A. from Swarthmore College in 1959 with majors in math and biology and a Ph.D. in biophysics from Brandeis University in 1966. He worked in the biochemistry department at the University of Missouri, Columbia, and at the Institute for Theoretical Chemistry at the University of Texas at Austin (where his son and wife are also faculty members.) In 1972 he published a science fiction novel, Cloning. He joined Wikipedia in September 2005 and focused on articles related to mathematics and thermodynamics. David passed away on April 21, 2007.
Dimitris Sfikas (Greek: Δημήτρης Σφήκας), a Wikipedian who edited in the Greek Wikipedia under the username DIMSFIKAS since October 2009. He was born in Athens on 29 April 1939 and died suddenly on 3 October 2011 because of pneumonia at Manchester. He studied political science, law and public administration at Athens, Manchester and London and spoke fluently English and French. During the 2 years of his contribution to the Greek Wikipedia he mainly created and edited articles about painting and architecture. In his user page in Greek Wikipedia you can find a short biographical memorial (in Greek).
Emil Petkov (Емил Петков) was one of the first editors of the Bulgarian Wikipedia. According to his family and friends, he died on May 20, 2007. The cause of death is still unknown. He was residing in the Netherlands and working as a Software Engineer and a researcher. His last editing of Wikipedia is from May 16, 2007. He left behind a wife and a daughter. He also left the Bulgarian Wikipedia community in shock and disbelief with his sudden, untimely death.
Emil made many contributions to the Bulgarian Wikipedia in many different areas for the past 3.5 years. He was always ready to help and give advice. He was known for his sense of humor, for his perfectionism and hard work, and for his desire to keep the purity of the w:en:Bulgarian language intact.
Frank Gualtieri was an editor on the English Wikipedia (as "Fg2"), the Wikimedia Commons (as "Fg2"), and the Japanese Wikipedia (as 二八). He died on August 23, 2009 in Japan. He was born in Boston, Massachusetts, United States.  His memorial in the English Wikipedia is located here: w:en:Wikipedia:Wikipedia Signpost/2009-10-12/Memorial and Collaboration - His memorial in the Japanese Wikipedia is located here: w:ja:利用者:二八/Obituary
Franamax passed away on 30 November 2012. From Canada, he became a Wikipedian on 26 August 2007 and served as an administrator and edit filter manager.
GerardusS died on 30 December 2011, a month after his wife Katja passed away. He was active from April 7, 2007 until 29 December 2011 (mainly on the Dutch Wikipedia).
Johan Lont 
Hume Cottnam Llewellyn Smith (username Kwantus) died suddenly July 21, 2005, at age 38 in the New Halifax Infirmary, QEII, Halifax, Nova Scotia. Born December 18, 1966 in Lunenburg, he attended Chester Elementary schools and was a graduate of Parkview Education Centre, Bridgewater. Hume held an honours degree in science and was the recipient of the Gold Medal for the highest academic standing in sciences and the Silver Medal for the second highest academic standing in his graduating class at Acadia University, Wolfville. He was a computer programmer and a member and assistant organist at Chester United Baptist Church and died of a massive heart attack within hours of completing a restoration project on his church's carillon, which he had worked on for over a decade. He had over 2000 edits to the English Wikipedia and created such articles as Conway chained arrow and Single bullet theory. Hume is survived by his mother, Gail Ida Hume Smith, and maternal grandmother, Mary Elizabeth Hume, Chester. He is buried in Pinehill Cemetery, Chester, Nova Scotia.
Laura Minguell 
Gérald Anfossi, username Nataraja, died of cancer on March 17, 2006. Gérald was an administrator and one of the most active editors on the French Wikipedia, where he contributed to numerous articles on South Asia. He also contributed many of his personal images to commons (such as Image:Sanchi2.jpg, which is featured on the History of India page, among others) and coordinated interwiki work between the en: and fr: wikipedias. His funeral was in his beloved adopted land of India.
Neil Morris lived in Southsea, England, where he worked as a Chartered Engineer and for a computer company. Neil was also an inventor, holding a patent to a drop detection device. Among the articles edited by Neil were Parallel SCSI, SCSI Enclosure Services, and Enclosure Services Interface. He passed away on September 17, 2006, according to a notice left on his user page. Further information on his life would be appreciated.
William O'Ryan , also known by his username Oryanw, died on February 12, 2008, has mainly contributed in the Esperanto Wikipedia where he was sysop. He contributed during less than 13 months, but translated hundreds of articles from English to Esperanto. He was also active in the English and the Tigrinya Wikipedias (as en:Oryanw and ti:Oryanw).
Bill was multilingual speaking English, Tigrinya, Dutch, Spanish, Turkish, etc. He also learned a multitude of computer languages. He spent countless hours translating articles from English into Esperanto on Wikipedia.
Josephine wrote : "He worked for years on a Tigrinya/English dictionary. His good friend Marco says that he feels Bill was probably the premier expert on Tigrinya in the United States. He was always learning. He taught himself anything he was interested in. His interests included science, history and languages. I used to teach science and whenever he would call me and ask if I had heard about something scientific, I would groan because I knew he would ask me about something I didn’t yet know or about which I knew less than he did. He belonged to book clubs and would go whenever his body would allow him to.
When he discovered Wikipedia, he was excited to realize he could contribute so much. His hands were painful and he had lost a lot of his small motor skills but he painstakingly would type out his translated articles. He trained himself to use his left hand on the mouse because the right hand didn’t work so well. His Wikipedia contributions and his Tigrinya dictionary were reasons to keep fighting because he felt he was making a difference."
Pietro Roveri 
Pietro Roveri was a Brazilian editor of Wikipedia and Wikiversity, heavily involved in the formation of the Brazilian chapter. He did his master thesis on the dynamics of the Portuguese Wikipedia. His work is available on Wikisource (). According to a family member Pietro died of a sudden heart attack on the 19 February 2012, at the age of 27, on a farm in Delfinópolis. The local community homage is here.
Robert Braunwart (Rbraunwa) was born in Richland Washington in 1948 and grew up in Moses Lake. He lived for many years in Oaxaca, México and Los Angeles, California. He attended Reed College as a National Merit Scholar before transferring to the University of Washington. During his life, Robert worked as an administrative assistant, editor, small business owner, and online math tutor, but his major interests and activities centered on political activities and a variety of personal projects, ranging from co-founding the Professional Football Researchers Association to contributing almost 12,000 edits and hundreds of articles to Wikipedia, primarily on the viceroys of New Spain. Of these new articles, at least 15 were honored as Did you know selections. Robert died on October 14, 2007 from melanoma.
Rob Levin 
Rob Levin, the founder of the freenode IRC network, died September 16, 2006 from head injuries sustained while riding a bicycle. Slashdot and Wikinews  both had articles on his death. Rob was known as "lilo" on the freenode network. He is survived by his wife and son.
Robert Ullmann 
R. Veenman 
Uladzimir Katkouski, a well-known and award-winning Belarusian blogger, editor of several Belarusian websites and activist for the usage of the w:en:Belarusian language on the Internet. He made over 1,300 edits to the English Wikipedia and several hundreds of edits to the Belarusian, Polish, German and other Wikipedias between 2004 and 2006 as Rydel. Katkouski mostly edited articles about his country and his language and also got himself into a few POV arguments. Among the articles he edited were Orsha and Belarusian language. He was evidently hit by a fire truck and after being in a coma for about a year he passed away on May 26, 2007.
Sandjaja Kosasih (Sanko), died on July 12th, 2012. He was 47 years old. On his Indonesia user page, Kosasih stated he was born in Mojokerto, East Java, and graduated from Sepuluh Nopember Institute of Technology. He started editing in Indonesia Wikipedia on April 2010, although had registered and edited in English Wikipedia on 2007. His last edit was on March 14, 2012. With more than 4,000 edit in Indonesian Wikipedia, he mainly contribute about Christianity. Sanko came from Samarinda, East Kalimantan. One of his major works is starting a Wikiproject for Catholic churches in Indonesian Wikipedia. He wrote 100 different articles in Derby Multilingual Challenge 2011, mostly in Bahasa Indonesian but also two in Java. In September 2011, the Mayor of Derby awarded prizes to Sanko via a web cast and these paintings and books signed by the Wikimedia UK board and the mayor were mailed to him by Derby Museum. Sanko was invited to rejoin the editors from Derby when the recent Gibraltarpedia contest was launched, but he never returned. In honor of his contributions, Indonesian Wikipedia community has decided to give him the honorary status.
Stéphane Tendon 
Bernard Norbert, also known by his username Treanna, passed away on September 18, 2005. With over 30,000 edits, of which about 25,000 were in article space in just two years, Treanna was the most active contributor of the French Wikipédia. Aged 31, he had just started to contribute again after a coronary incident which had landed him in the hospital in July. The French-speaking community was informed of his condition thanks to one of his sisters, Anne, by email and on this page, throughout the summer. Treanna will be remembered as a great contributor in all domains, but especially in the domains of history, archeology, genealogy, palaeography and related topics. The French Wikipedia community has decided to honour him in working together on a WikiReader about the Middle Ages, a part of Wikipédia to which he has greatly contributed. According to Myriam, his youngest sister, the WikiReader could "help us, his family, to better realise the extent of what he knew and loved to share... the knowledge he did not have time to teach us". Many contributors expressed their condolences to the family here.
Tron Øgrim, a Norwegian Wikimedian, journalist, and author, died on May 23, 2007. He was 59 years old. Tron was one of the most influential persons in Norway's Marxist-Leninist movement in the sixties and seventies. He was one of the founders of the Workers' Communist Party, a party which strongly advocated the Chinese branch of communism. Tron was also central in the founding of the newspaper Klassekampen and the publishing house Oktober. Tron became a journalist after leaving politics in the eighties, having a technology column in the Norwegian edition of PC World. Tron became a Wikipedian in December 2005, when libelous statements about a colleague appeared in a Norwegian (bokmål) Wikipedia article. Tron continued as a Wikipedia editor after the issue was resolved, writing about constructed languages through most of 2006. In the fall of 2006, his focus changed to Nepal generally and the history of communism in Nepal specifically (see Nepals kommunistiske parti (maoistisk) for an example of one of his articles.) Tron was known in the Norwegian wikicommunity for writing very long articles about somewhat obscure topics. Tron also cared much about smaller wikis and their progress. He was routinely posting messages about milestones at the Norwegian Village Pump, as well as participating on the Wikimedia News announcements page. Tron was extremely important for the Norwegian wiki movement, and he was often interviewed by the press about Wikipedia. He gave a lecture about Wikipedia when Wikipedia's founder Jimbo Wales visited Norway in May 2006. More info on him is available at Tron Øgrim and Wikipedia:Wikipedia_Signpost/2007-05-28/Wikipedian_death.
Xavier Bonnafous, a Wikipedian who primarily edited in the French Wikipedia under the username Xulin, died on May 7, 2006 during a hang gliding accident, according to online reports. Xavier also edited the English Wikipedia using Xulin, although this account was mainly used for interwiki work. On his French user page, Xavier said he was interested in free software and ecology issues. A memorial for Xavier has been established on the French Wikipedia.
See also 
- ar:ويكيبيديا:ويكيبيديون رحلوا
- German Wikipedia In Memoriam to deceased editors
- English Wikipedia In Memoriam
- Spanish Wikipedia In Memoriam
- Esperanto Wikipedia In Memoriam
- he:ויקיפדיה:ויקיפדים שהלכו לעולמם
- Lithuanian Wikipedia In Memoriam
- Dutch Wikipedia In Memoriam
- Norwegian Wikipedia In Memoriam
- Polish Wikipedia In Memoriam
- Portuguese Wikipedia In Memoriam
- Commons: Deceased contributors
- Zemřel Antonín Vítek. Vždy věděl, co a proč se ve vesmíru pohnulo
- Monda FaktoLibro de Avtandil Abuladze (web-archive)
- Caroline Thompson user talk page entry of Revision as of 21:35, 10 February 2006, accessed January 23, 2007.
- Wikipedia Signpost News and Notes section, "Wikipedian Caroline Thompson passes away" by Ral315, March 6, 2006, accessed January 23, 2007.
- In cranes, a symbol of hope, The Columbia Missourian, July 17, 2007.
- Terminally ill cancer patient rallied behind ‘1,000 cranes’, The Columbia Missourian, Sept. 15, 2007.
- comment on user page and additional confirmation by admins Alabamaboy and Raul65.
- Bij het overlijden van Johan Lont, Johan's weblog, September 6, 2010
- LifeLines Genealogical System info on Hume Smith, accessed January 23, 2007.
- The Halifax Herald Limited, Hume Smith obituary on July 23, 2005, with additional confirmation by User:RobHutten archived here.
- Livre d'or (fr) and a notice from his wife on his talk page (fr). Accessed January 23, 2007.
- U.S. Patent Office US 7,084,759 B2, accessed January 23, 2007.
- Revision as of 00:50, 3 November 2006 by User:Howcheng, accessed January 23, 2007.
- Wikimedia Brasil mailing list
- Wikimedistas lamentam morte de Pietro Roveri. (Portuguese). Wikinews. February 24, 2012.
- Comment on Rbraunwa's talk page, possibly confirmed by Jimbo Wales who protected the user page. In addition, confirmation comes from an e-mail sent to Wikipedia editor w:en:User:KP Botany from Robert's family members.
- Slashdot article, "Rob Levin, lilo of FreeNode, Passes" September 16, 2006, accessed January 23, 2007.
- Wikinews, accessed w:en:January 23, 2007
- Lilo is Dead blog entry.
- René Veenman overleden, Oudheid.nl, March 2010
- Вянок памяці: Уладзімер Каткоўскі. Аляксандар Лукашук, Прага, accessed May 25, 2007.
- Discussion Utilisateur:Treanna/hospitalisation, French Wikipedia, accessed January 23, 2007.
- French contributor dies, October 10, 2005, By Ral315, Anthere and Notafish. Accessed January 23, 2007.
- "Tron Øgrim er død" by TORSTEIN BRATTSET DRABLØS, Dagbladet.no Torsdag 24 May 2007, 10:32, accessed w:en:June 2, w:en:2007.
- "Tron Øgrim er død" by Toralv Østvang, fagredaktør, PC World Norge, w:en:24 May w:en:2007, accessed June 2, 2007.
- "Norwegian Wikipedian and journalist dies at 59" by Kjetil r, Wikipedia Signpost, w:en:28 May 2007, accessed June 2, 2007.
- French Wikipedia, a memorial to Xavier Bonnafous, and Forum du deltaplane, an online discussion on his death titled "Aurevoir XAVIER." Accessed w:en:January 23, w:en:2007.