Moses Ha-Levi Horowitz, also known as Moishe Hurvitz, Moishe Isaac Halevy-Hurvitz, etc., was a playwright and actor in the early years of Yiddish theater. Jacob Adler describes him as an "authorit[y] on dramaturgy", but also remarks that before being part of the Yiddish theater in London in the mid-1880s he had "wandered in different lands, involved himself in various undertakings, and then moved on often leaving, it is said not altogether pleasant memories behind him." He was one of the few figures in the early years of Yiddish theater who did not participate in the boom years in Imperial Russia (1879–1883).

Yiddish theatre consists of plays written and performed primarily by Jews in Yiddish, the language of the Central European Ashkenazi Jewish community. The range of Yiddish theatre is broad: operetta, musical comedy, and satiric or nostalgic revues; melodrama; naturalist drama; expressionist and modernist plays. At its height, its geographical scope was comparably broad: from the late 19th century until just before World War II, professional Yiddish theatre could be found throughout the heavily Jewish areas of Eastern and East Central Europe, but also in Berlin, London, Paris, Buenos Aires and New York City.