Japanese Wikipedia
Type of site | Online encyclopedia |
|---|---|
| Available in | Japanese |
| Owner | Wikimedia Foundation |
| URL | ja |
| Commercial | No |
| Registration | Optional |
| Launched | 11 May 2001 |
| Current status | Active |
Content license | Creative Commons Attribution/ Share-Alike 4.0 (most text also dual-licensed under GFDL) Media licensing varies |
The Japanese Wikipedia (ウィキペディア日本語版, Wikipedia Nihongoban, lit. 'Japanese version of Wikipedia') is the Japanese edition of Wikipedia, a free, open-source online encyclopedia. Started on 11 May 2001, the edition attained the 200,000 article mark in April 2006 and the 500,000 article mark in June 2008. As of 18 June 2025, it has 1,462,576 articles with 12,426 active contributors, ranking fourth in the latter metric behind the English, French and German editions.
As of November 2024, the Japanese Wikipedia is the world's second most visited Wikipedia language edition after the English Wikipedia; it has been the second most viewed Wikipedia during most periods since at least 2008. It has a high proportion of anonymous contributors and one of the lowest admin-to-user ratios of any Wikipedia language edition. The Japanese edition is one of the best Wikipedias in retention of new editors and has one of the lowest edit revert rates.
The Japanese Wikipedia has been accused of historical revisionism by a number of scholars, especially its pages on World War II. Its culture has been described as hostile and heavily influenced by the right-wing textboard 2channel.