Crimea ( /kraɪˈmiːə/), or the Autonomous Republic of Crimea (Ukrainian: Автономна Республіка Крим, Avtonomna Respublika Krym; Russian: Автономная Республика Крым, Avtonomnaya Respublika Krym; Crimean Tatar: Qırım Muhtar Cumhuriyeti, Къырым Мухтар Джумхуриети), is a sub-national unit, an autonomous republic, of Ukraine. It is located on the northern coast of the Black Sea, occupying a peninsula of the same name. It was often referred to with the definite article, as the Crimea, until well into the 20th century.