VK may refer to:
VK (VKontakte; Russian: ВКонта́кте, meaning InContact) is the largest European online social media and social networking service.
Vkhutemas (Russian: Вхутемас; IPA: [fxʊtʲɪˈmas], acronym for Высшие художественно-технические мастерские Vysshiye Khudozhestvenno-Tekhnicheskiye Masterskiye "Higher Art and Technical Studios") was the Russian state art and technical school founded in 1920 in Moscow, replacing the Moscow Svomas.
The VK 45.01 (P) was the official designation for an unsuccessful heavy tank prototype produced by Porsche in Germany in 1942. It was not selected for production and the Henschel design to the same specification was produced as the Tiger I.
The human gene VKORC1 encodes for the enzyme, Vitamin K epOxide Reductase Complex (VKORC) subunit 1. This enzymatic protein complex is responsible for reducing vitamin K 2,3-epoxide to its active form, which is important for effective clotting.
Starting in 1938, the VK 20 series were the proposed replacements of the Panzer IV and Panzer III tanks with entries by MAN, Krupp and Daimler Benz.
Vaterpolo klub Crvena Zvezda (English: Waterpolo club Crvena Zvezda) is a waterpolo club from Belgrade, Serbia.
VKC Group is an Indian company from Kozhikode district of Kerala which is engaged in the manufacture and marketing of footwear.
Vaterpolo klub Partizan (Serbian Cyrillic: Ватерполо клуб Партизан) is a water polo club from Belgrade, Serbia.
The light tank VK 1602 Leopard was a planned German reconnaissance vehicle designed from mid 1941 through January 1943, with the serial production scheduled for April 1943, but the project was abandoned before the first prototype was complete in January of that same year.