Kipras Bielinis (1883–1965) was a Lithuanian politician, one of the leaders of the Social Democratic Party in interwar Lithuania. Bielinis was a son of Jurgis Bielinis, one of the best known Lithuanian book smugglers. Bielinis attended a gymnasium in Riga, but was expelled for his social-democratic activities. He joined the Social Democratic Party of Lithuania and along with Steponas Kairys was one of its leaders until his death. Bielinis was an active participant in the Russian Revolution of 1905 delivering some 30 public anti-Tsarist speeches across Lithuania. He was arrested by the police together with other members of the Latvian Social Democratic Workers' Party in November 1907 and was sentenced to four years of hard labor and then exile to the Irkutsk Oblast. After the February Revol