Gurgen Sevak was born in Tiflis. In 1924 he finished Nersisian School of Tiflis, in 1928 Yerevan State University (Faculty of History). From 1931 to 1979 he taught at Yerevan State Universtiy, Pedagogical Universities of Yerevan and Leninakan, also at higher education institutions of Baku and Tbilisi from 1941 to 1946. Between 1932 to 1940 was the scientific secretary of State Terminology Committee, from 1932 – Member of World Academy of Esperanto language, since 1947 - Head of the Department of modern Armenian language, later - the Terminology and Culture of Speech at the Institute of Language of the Academy of Sciences of the Armenian SSR, from 1941-1971 - Head of the Department of Armenian Language at Yerevan State University. Gurgen Sevak translated into Armenian “Yevgeniy Onegin” poem by Pushkin. In 1948 he received Doctorate in Philology (Professor since 1948), was awarded with “Khachatur Abovyan” medal, in 1961 received Honored Scientist of the Armenia, in 1967 – of Georgia title. Died in Yerevan.