The Latvian Soviet Socialist Republic (Also known as the Latvian SSR, or Soviet Latvia) was a de facto constituent republic of the Soviet Union covering the occupied and annexed territory of Latvia from 1940 to 1941, and then from 1944 until 1990.
The Soviet occupation and annexation of Latvia began between June and August 1939, according to the agreed terms of the secret protocol of the Molotov–Ribbentrop Pact.