Topic summary
List of Wikipedias

Wikipedia is a free multilingual wiki-based open-source online encyclopedia edited and maintained by , started on 15 January 2001 as an English-language encyclopedia. Non-English editions followed in the same year: the German and were created on 16 March, the was created on 23 March, and the was created on 23 May. As of September 2026, Wikipedia articles have been created in 364 editions, with 348 currently active, 16 closed and 11 moved to Wikimedia Incubator.
The Meta-Wiki language committee manages policies on creating new Wikimedia projects. To be eligible, a language must have a valid ISO 639 code, be "sufficiently unique", and have a "sufficient number of fluent users".