The Lithuanian Liberty League or LLL was a dissident organization in the Lithuanian Soviet Socialist Republic and a political party in independent Republic of Lithuania. Established as an underground resistance group in 1978, LLL was headed by Antanas Terleckas. Pro-independence LLL published anti-Soviet literature and organized protest rallies. While it enjoyed limited popularity in 1987–1989, it grew increasingly irrelevant after the independence declaration in 1990. It registered as a political party in November 1995 and participated in parliamentary elections without gaining any seats in the Seimas.

The Lithuanian Soviet Socialist Republic, also known as Soviet Lithuania or simply Lithuania, was de facto one of the constituent republics of the Soviet Union between 1940–1941 and 1944–1990. After 1946, its territory and borders mirrored those of today's Republic of Lithuania, with the exception of minor adjustments to its border with Belarus.