Tiesa (English: truth) was the official daily newspaper in the Lithuanian SSR. Established in 1917, the newspaper soon became the official voice of the Communist Party of Lithuania. After the Lithuanian victory in the Lithuanian–Soviet War, the party and the newspaper were outlawed in Lithuania. Therefore, it was first printed in exile and later illegally in Kaunas. Tiesa survived irregular publishing schedules, frequent relocations, staff changes, and other difficulties and, after the Soviet occupation of Lithuania in June 1940, became the official daily of the new communist regime. At its peak, its circulation exceeded 300,000 copies. After the collapse of the Soviet Union, Tiesa lost its official status and its circulation shrunk. The publication was discontinued in 1994.
The first issue of Tiesa was published by the Lithuanian section of the Russian Social Democratic Labour Party (bolsheviks) in Petrograd on April 12, 1917. In October 1917, Tiesa became the official newspaper of the Lithuanian section. From April to December 1918, it was published in Moscow. By December 12, 1918, 91 issues of Tiesa were published.
In March–April 1919, five issues of the newspaper were published in Vilnius, the proclaimed capital of the short-lived Lithuanian–Belorussian Soviet Socialist Republic. It was the official newspaper of the Communist Party (Bolsheviks) of Lithuania and Belorussia. When Poland captured Vilnius during the Vilna offensive, Tiesa evacuated and was printed with interruptions in Raseiniai, Kaunas, Königsberg, Bellshill, Smolensk as the official newspaper of the Communist Party of Lithuania. In March 1926, it settled more permanently in Kaunas, the temporary capital of Lithuania. The communist party was outlawed in Lithuania, therefore Tiesa had to be printed illegally. There were 157 issues published in Kaunas.