block of Wikipedia in Turkey

The Turkish Wikipedia logo with a censor bar covering the text The logo displayed after the second anniversary of the ban, with the message "2 yıldır özlüyoruz" (English: "we've been missing it for two years") A graph of page views for the Turkish Wikipedia from February to May 2017 shows a great drop of roughly 80% immediately after the block was imposed. With Wikipedia's content being open, alternative websites continued to provide the information provided by the online encyclopedia to the public until the lifting of the ban in January 2020. Error page when attempting to visit Wikipedia on the Chrome browser in Turkey during the ban. In addition, the browser says the connection is "not secure".

From 29 April 2017 to 15 January 2020, the online encyclopedia Wikipedia was blocked in Turkey. On 29 April 2017, Turkish authorities blocked online access to all its language editions throughout the country. The restrictions were imposed by Turkish Law No. 5651, due to the English version's article on state-sponsored terrorism (in the version of 29 April 2017), where Turkey was described as a sponsor country for the Islamic State and al-Qaeda. The Turkish Information and Communication Technologies Authority (ICTA) released a statement on its website that after technical analysis and legal consideration based on the Law Nr. 5651, measures have been taken for the website. Turkish courts viewed the article as a public manipulation of mass media. Requests by the ICTA to edit several articles to comply with Turkish law were not acted on.