The Caucasus Viceroyalty was the Russian Empire's administrative and political authority in the Caucasus region exercised through the offices of glavnoupravlyayushchiy and namestnik ("viceroy"), situated in the modern areas of the Russian Federation, Armenia, Azerbaijan and Georgia. These two terms are commonly, but imprecisely, translated into English as viceroy, which is frequently used interchangeably with governor general. More accurately, glavnoupravlyayushchiy is referred to as the High Commissioner of the Caucasus, and namestnik as Viceroy.

Azerbaijan, officially the Republic of Azerbaijan, is a transcontinental country located at the boundary of Eastern Europe and West Asia. It is a part of the South Caucasus region and is bounded by the Caspian Sea to the east, Russia's republic of Dagestan to the north, Georgia to the northwest, Armenia and Turkey to the west, and Iran to the south. Baku is the capital and largest city.