Dāvids Beika (Russian: Давид Самуилович Бейка; 30 August 1885 — 6 February 1946) was a Latvian Marxist revolutionary and political activist, publicist and Soviet intelligence officer.
He was a member of the Central Committee of the Communist Party of Latvia and was a delegate of the second and third congresses of the Communist International and was elected a member of its Executive Committee and then head of the International Liaison Department of the Comintern in 1920.
From 1928 he was in economic work and was a representative of member of the Collegium of the People's Commissariat of Heavy Industry of the USSR.
[2] During the Spanish Civil War he was a military commissar in the International Brigades from 1936 to 1937 and then from 1937 to 1938 he was Comintern officer in the United States.
Beika was recalled to Moscow, and on 20 April 1938 he was arrested by the NKVD on charges of participating in an anti-Soviet nationalist terrorist organization, and on 22 April 1939, by the verdict of the Military Collegium of the Supreme Court of the Soviet Union, he was sentenced to twenty years in a forced labor camp.