The Kazakh Soviet Socialist Republic (Kazakh: Қазақ Кеңестік Социалистік Республикасы, Qazaq Keñestik Socïalïstik Respwblïkası; Russian: Казахская Советская Социалистическая Республика, Kazakhskaya Sovetskaya Sotsialisticheskaya Respublika), also known as the Kazakh SSR for short, was one of republics that made up the Soviet Union. At 2,717,300 square kilometres (1,063,200 square miles) in area, it was the second largest constituent republic in the USSR, after the Russian SFSR. Its capital was Alma-Ata (today known as Almaty). Today it is the independent state of Kazakhstan in Central Asia. During its existence it was led by the Communist Party of the Kazakh SSR.
The country is named after the Kazakh people, Turkic-speaking former nomads who sustained a powerful khanate in the region before Russian and then Soviet domination. The Soviet Union's spaceport, now known as the Baikonur Cosmodrome was located in this republic at Tyuratam, and the secret town of Leninsk was constructed to accommodate its personnel.