This page is a chronology of events in year 2009 directly related to Wikipedia and Wikipedians, both within Wikipedia and in the whole wide world. Wikipedia events and events in sister projects (Wiktionary, Wikibooks, etc.) are listed as long as they are related to Wikipedia.
Additions to this page must follow certain rules, because it is hoped that in 50 years or so this page will become a valuable source of scholar research.
- January 16: Italian Wikipedia won the Premiolino award 
- January 21: Kennedy-Byrd incident: two politicians were announced dead by wikipedia vandals, stirring news and prompting Jimbo Wales to request the activation of Flagged Revisions on English Wikipedia
- January 26: Mozilla announced a $100,000 grant to the Wikimedia Foundation to advance open video 
- February: Wikipedia:Wikipedia Loves Art, a scavenger hunt and free content photography contest among museums and cultural institutions worldwide happens aimed at illustrating Wikipedia articles, coordinated by the Brooklyn Museum;
- February 16: Wikipedia Signpost: editor-in-chief Ral315 is replaced by Ragesoss; a new section, "Discussion Report" introduced
- March 17: The Wikipedia Revolution: How a bunch of nobodies created the world's greatest encyclopedia (ISBN 1401303714) by User:Fuzheado (Andrew Lih) 
- March 12: Wikipedia:WikiProject Missing encyclopedic articles marked the completion of writing articled for the list of notable films compiled in 2005
- May 25: The 100,000th article in Arabic Wikipedia created: المعهد العالي للفنون والحرف بقابس ("The Higher Institute of Arts and Crafts" of the University of Gabès in Tunisia).
- May 28: After long proceedings, Arbcom issued a massive restriction, including numerous bans against editors affiliated with Scientology. This was the first intentional ban of a whole organization for alleged pushing their agenda on wikipedia. 
- June 15: Wikimedia to relicense its content as Massive Multiauthor Collaborations under the Creative Commons Attribution-Share Alike 3.0 license, in addition to the current GFDL license
- June 22: Beginning of "Wiki Loves Art" event in Netherlands (van 22 juni tot 1 september 2009): volunteers will visit Dutch museums to take photographs of art objects. The photos will be published online with a creative commons (CC) license. The project is run by Creative Commons Netherlands and Wikimedia Netherlands, in collaboration with the Amsterdam Museum Night Foundation and the Netherlands Institute for Heritage.
- July 25-26: Wikipedia:Meetup/NYC/Wiki-Conference 2009 at New York University
- August 17: The 3,000,000'th article, Beate Eriksen, was created by user:Lampman
- August: An iPhone app, Wikipedia Mobile, is announced.
- August 26–28: m:Wikimania 2009, Buenos Aires
- September: Admin Law was indef-blocked after them turned out to be a sockpuppet of formerly banned User:The undertow, and quite a few admins, including Arbcom members knew about this.
- October 10: Wikipedia:Wikipedia Takes Manhattan-3 event, a scavenger hunt and free content photography contest coordinated with Columbia University and New York University students and the Open Planning Project, aimed at illustrating Wikipedia and Streetswiki articles covering the isle of Manhattan, and all across the Five Boroughs of New York City
- October 13:
- October 26: A custom Google search extension for Wikipedia created 
- November 1: Durova (talk · contribs) was annonouced to be the winner of Wikipedia:WikiCup'2009.
- November 10: A "Wikipedia Forever" fundraiser caused a good deal of controversy for its message style
- December 1: voting for Wikipedia:Arbitration Committee Elections December 2009 started
- December 27: German Wikipedia created the 1,000,000th article
- February 26: wikipedia starts testing the "Books" feature, a functionality to print books from collections of wikipedia articles.
- March: Edit filters were introduced in English wikipedia
- March 8 Wikipedia:Centralized discussion suggested, to serve as a dashboard for various general-purpose discussions
- August 30: Wikipedia:Article wizard 2.0, an advanced form of Wikipedia:Article wizard was devised by Rd232 (talk · contribs). The category:Articles created via the Article Wizard tracks its usage.
- October 5: work on Wikipedia:Community de-adminship started, by Uncle G (talk · contribs)
- April 19: Establishment of the Audit Subcommittee of the ArbCom (first appointment) whose purpose is to investigate complaints concerning the use of CheckUser and Oversight.
- Signpost Week of January 10: none
- Signpost Week of January 17: CRGreathouse (nom) and Climie.ca (nom)
- Signpost Week of January 24: R'n'B (nom), PeterSymonds (nom) (after de-sysoping), Geni (nom) (after de-sysoping) and Kanonkas (nom).
- Signpost Week of February 8: Somno (nom), RegentsPark (nom) and Rootology (nom)
- Signpost Week of February 16: Nja247 (nom) and WereSpielChequers (nom).
- Signpost Week of February 23:S@bre (nom) and Amalthea (nom).
- Signpost Week of March 2: Mfield (nom) and Msgj (nom).
- Signpost Week of March 9: Mufka (nom), Admiral Norton (nom) and Valley2city (nom).
- Signpost Week of March 16: Bettia (nom) and Camw (nom)
- Signpost Week of March 23: Ged UK (nom) and OverlordQ (nom)
- Signpost Week of March 30: Smith609 (nom), LinguistAtLarge (nom), Mentifisto (nom), Someguy1221 (nom) and Al Ameer son (nom)
- Signpost Week of April 6: Paxse (nom). Anonymous Dissident (nom) was promoted to bureaucrat
- Signpost Week of April 13: AlexiusHoratius (nom), Toon05 (nom), Tassedethe (nom), and AdjustShift (nom). Avraham (nom) was promoted to bureaucrat
- Signpost Week of April 20: Foxy Loxy (nom), Orlady (nom), Spinningspark (nom), Closedmouth (nom), Drilnoth (nom) and BOZ (nom).
- Signpost Week of April 27: TheDJ (nom), Vianello (nom) and Law (nom).
- Signpost Week of May 4: Graeme Bartlett (nom).
- Signpost Week of May 11:Rjanag (nom), Dinoguy1000 (nom) and Laser brain (nom).
- Signpost Week of May 18: Rambo's Revenge (nom), Rosiestep (nom), Wadester16 (nom), JamieS93 (nom), Runningonbrains (nom) and Kotra (nom).
- Signpost Week of May 25: FlyingToaster (nom).
- Signpost Week of Jun 1: CactusWriter (nom).
See Wikipedia:Former_administrators for all other currently former admins, who were desysopped voluntarily (those who may have been resysopped are no longer listed there).
- Hemanshu - January 2009 emergency desysopped by the
- Sade - February 2009 involuntarily desysopped by
- Jasonr - March 2009, involuntarily desysopped by
- Mitchazenia - April 2009, emergency desysop by steward Spacebirdy
- Ryulong - May 2009, per ArbCom decision
- August 3: Aitias : Aitias (nom) (desysopped August 3 2009)
- Law - September 30, resigned under controversy (revealed to be a sockpuppet)
Death and retirement
- February 20: Titch Tucker (talk · contribs) died.
- March 29: Nitelinger (talk · contribs) (Dick Golembiewski, aka Dick Nitelinger) died.
- August 23: Fg2 (talk · contribs) (Frank Gualtieri) died.
- August 30: Glen Dillon (talk · contribs) died in car crash.
- While formally Wikipedia:Verifiability and others of Wikipedia's content-controlling policies do not apply outside the main namespace, they must be strictly followed here, for the sake of scholarly discipline:
- The listed event and its date must be mentioned in a wikilinked or externally linked reference. It is advised to consider an external link to a specific version of a Wikipedia page rather than a wikilink, if this page is linked for a critical but volatile piece of information.
- Credible sources must be used only. Within Wikipedia, Wikipedia Signpost is one of them.
- Trivial events must be avoided:
- List of 2009 Premiolino winners
- "Kennedy, Byrd the Latest Victims of Wikipedia Errors"
- In Support of Open Video
- "'Wikipedia Revolution' united users on Internet", a baltimore Sun column
- "Volunteers to put art online for Wikipedia"
- Le Masson, Sarah (19 Aug 2009). "Wikipedia launches official iPhone application". The Daily Telegraph. Retrieved 2009-08-20.
- "2009 International Multiconference on Computer Science and Information Technology (IMCSIT)", conference report
- "Nagroda im. Jana Łukasiewicza dla ITTI", a Polish Information Processing Society webpage (in Polish)
- "OpenMoko Launches WikiReader", a wikimedia blog entry
- "Google experiments with new ways to search Wikipedia", A wikimedia blog post by Erik Moeller
- Controversial "Wikipedia Forever" fundraiser to start 10 November
- "Books Extension Enabled", Wikipedia Signpost
- The passing of Dick Golembiewski