Caucasus Krai (Russian: Кавказский край) was an administrative division (a krai) of the Russian Empire. It was established in 1844. From that time till 1882 the head of the region (krai) was Viceroy-namestnik (Russian: наместник), during 1882-1905 - glavnoupravlyayushchiy or glavnonachalstvuyushchy (Russian: главноуправляющий or главноначальствующий) and in 1905-1917 again namestnik.
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Caucasus Krai Wikipedia(Text) CC BY-SA