The Azerbaijan Soviet Socialist Republic (Azerbaijani: "Азәрбајҹан Совет Сосиалист РеспубликасыAzərbaycan Sovet Sosialist Respublikası"; Russian: Азербайджанская Советская Социалистическая Республика [АзССР] "Azerbaydzhanskaya Sovetskaya Sotsialisticheskaya Respublika [AzSSR]"), also known as the Azerbaijan SSR for short, was one of the republics that made up the former Soviet Union.