VK (Vkontakte; Russian: ВКонта? It is based on Russian online social media and social network services. It is available in many languages, but is particularly popular among Russian speaking users. VK allows users to send messages to each other publicly or privately, create groups, public pages and events, share and tag images, audio and video, and play browser based games. It is located in St. Petersburg, Russia.

As of January 2017, VK had at least 410 million accounts. [5] VK is ranked 15th in Alexa's Global 500 sites (as of September 2017). This is the most popular website in Russia. According to sameweb, VK is the sixth most popular website in the world. [8] As of October 2016, VK has become the most popular social networking site in Belarus, Ukraine and Kazakhstan in addition to Russia.