Oyneg Shabbos (Ashkenazic pronunciation; in Modern Israeli Hebrew: Oneg Shabbat, עונג שבת) was the code name of a documentary group led by Jewish historian Dr. Emanuel Ringelblum in the Warsaw Ghetto during the Nazi-German occupation of Warsaw in World War II from 1939 to 1942. The group, which included historians, writers, rabbis and social workers, was dedicated to chronicling life in the Ghetto. They worked as a team, collecting documents and soliciting testimonies and reports from dozens of volunteers of all ages. The materials submitted included essays, diaries, drawings, wall posters, and other materials describing life in the Ghetto. The collection work started in September 1939 and ended in January 1943.