Mark Yudl (Judl) (1897, Palanga - 1975, New York) - linguist, publicist.

Until 1911 Yudl Mark studied at a Russian school and with private tutors, then at a gymnasium in Vilnius. In 1915 he entered the history and philology department of Petrograd University, was a member of the Jewish People's Party (Folkspartei). At the end of 1918 he settled in Liepaja, organized a branch of the Folkspartei. In 1923 he became the general secretary of the Jewish National Council of the Lithuanian Republic, secretary and vice-president of the Lithuanian Folkspartei. He founded the first Jewish real gymnasium in Ukmerge (Lithuania), where he taught Yiddish, Russian and served as director (1920-24). In 1927-30 He taught Yiddish and Jewish literature at the Riga Jewish Gymnasium and Yiddish in teacher training courses. From 1930, he was editor-in-chief of the newspaper “Folksblat” (Kaunas), and from 1935, he worked at the commercial gymnasium in Kaunas. He was one of the founders (1925) and director (since 1929) of the YIVO (Yidisher Wasnshaftler Institute, a research institute for the study of Yiddish culture and language). In 1936, he moved to the United States. From 1941 to 1968, he was editor of the YIVO's printed organ, “Yidishe Shprakh.” In the 1960s, he directed work on the “Great Dictionary of the Yiddish Language.” In 1970, he moved to Israel.

From 1921, he was engaged in literary activity, publishing in Jewish periodicals. In 1923-24 He collaborated with the magazine Dos Nae Lebn (Odessa). He translated E.-M. Remarque's novels All Quiet on the Western Front and other books into Yiddish. From 1930 onwards, he published research on Yiddish and Jewish literature in the collections of IVO-Bletter. He was the author of many Yiddish textbooks: Shul-grammatik (School Grammar, 1921), Grammatik fund der idisher shprakh (Grammar of the Yiddish Language, 1978), as well as a number of other works: Der idisher poypst (The Jewish Pope, 1946), and Istorishe geshthaltn (Historical Images, 1957). Brother of M.Mark.