The Finnish Wikipedia (Suomenkielinen Wikipedia) is the edition of Wikipedia in the Finnish language. By article count, it is the 20th largest Wikipedia with about 372,000 articles as of May 2015 Wikipedia is the only encyclopedia in Finnish which is still updated.
The Finnish language project was started in late 2002, but it remained at a very primitive stage until well into 2003. The speed of development picked up somewhat after the MediaWiki software was upgraded to Phase III in late November, 2003, and continued to increase steadily through 2004.
Despite the small number of native Finnish speakers and the high number of Finnish speakers who are also fluent in English, the Finnish Wikipedia is currently the 20th largest Wikipedia with over 250,000 articles. The ratio of Finnish language Wikipedia articles to the number of Finnish speakers is the 16th-largest at 74.3 articles per 1000 speakers. These figures were based on Ethnologue's estimate of 5,009,390 Finnish-speakers.
In 2013 the reliability of the Finnish Wikipedia was investigated. The researchers used experts to evaluate quality of articles and found that 70% of the articles scored well for accuracy.