Elmar Muuk (26 December 1901 – 20 November 1941) was an Estonian linguist and author of a number of dictionaries and textbooks of the Estonian language, and was, together with Mihkel Veske and Johannes Aavik, responsible for development of Estonian as a modern European language.Muuk was born in Eivere village, Järva County. He took part of the Estonian War of Independence. Muuk was arrested by NKVD on 14 June 1941 in Tallinn and died in imprisonment in Sevurallag, Sverdlovsk oblast.