Abraham Zevi Idelsohn (Hebrew: ×Ö·×‘Ö°×¨Ö¸×”Ö¸× ×¦Ö°×‘Ö´×™ ×ידלסון‎; middle name also rendered Zvi, Zwi, or Zebi; 1882–1938) was a prominent Jewish ethnologist and musicologist, who conducted several comprehensive studies of Jewish music around the world.
Idelsohn was born in Feliksberg, Latvia and trained as a cantor. He worked briefly in both Europe and South Africa before emigrating to Palestine in 1905 and establishing a school of Jewish music there in 1919. In 1922 he moved to Cincinnati, Ohio to take a position as professor of Jewish music at Hebrew Union College. His works include the Thesaurus of Hebrew Oriental Melodies (10 volumes, 1914-1932) and Jewish Music (1929). He is considered to be the author of the text of the famous Jewish folk song "Hava Nagila." .
He is the maternal grandfather of Joel Goodman Joffe (Lord Joffe).
Abraham Zevi Idelsohn may also be known as Bashir Am Israelim "Hava Nagila" (הבה × ×’×™×œ×” in Hebrew) is a Hebrew folk song, the title meaning "let us rejoice". It is a song of celebration, especially popular amongst.