1A port on the Baltic coast of eastern Europe, capital of the Russian region of Kaliningrad; population 421,700 (est. 2008). It was known by its German name of Königsberg until 1946, when it was ceded to the Soviet Union under the Potsdam Agreement and renamed in honour of Kalinin. Its port is ice-free all the year round and is a significant naval base for the Russian fleet.

2A region of Russia, an enclave situated on the Baltic coast of eastern Europe; capital, Kaliningrad. It shares its borders with Lithuania and Poland and is separated from Russia by the intervening countries of Lithuania, Latvia, and Belarus.