Grigorijus Mikalauskas (1914–?) was born in Vilnius. From 1925 to 1933, he studied at Ferdinand Veler Humanistic Gymnasium in Vilnius. In 1934, he took a course in trade, and from 1934 to 1936, he was unemployed. From 1936 to 1939, he worked in a factory. In 1940, Mikalauskas applied to study at the Law Department of the Faculty of Law of Vilnius University. It was not possible for him to complete his studies because, on 19 September 1941, he was expelled from the university on the basis of the Order of 17 September 1941 of the Department of Higher Education of the Board of Education, which was subordinate to the National Socialists. No further information on the fate of Grigorijus Mikalauskas is known.