The Soyuz-2.1v (Russian: Союз 2.1в, Union 2.1v), GRAU index 14A15, known earlier in development as the Soyuz-1 (Russian: Союз 1, Union 1), is a Russian expendable launch vehicle. It was derived from the Soyuz-2.1b, and is a member of the R-7 family of rockets. It is built by TsSKB Progress, at Samara in Russia. Launches are conducted from existing facilities at the Plesetsk Cosmodrome in Northwest Russia, with pads also available at the Baikonur Cosmodrome in Kazakhstan, and new facilities at the Vostochny Cosmodrome in Eastern Russia.