The Baltic Military District was a military district of the Soviet armed forces in the Baltic states, formed shortly before the German invasion during World War II. After the end of the war the Kaliningrad Oblast was added to the District's control in 1946, and the territory of Estonia was transferred back to the Baltic Military District from the Leningrad Military District in 1956. The Baltic Military District was disbanded after the fall of the Soviet Union in 1991 and reorganised into the North Western Group of Forces, which ceased to exist following the withdrawal of all Russian troops from Estonia, Latvia and Lithuania on 1 September 1994.

Military districts are formations of a state's armed forces which are responsible for a certain area of territory. They are often more responsible for administrative than operational matters, and in countries with conscript forces, often handle parts of the conscription cycle.