Zwi Migdal (Yiddish: צבי מגדל, IPA: [ˈtsvɪ mɪɡˈdal]) was an organized crime group involved in the trafficking of Jewish women from the shtetls of Eastern Europe for sexual slavery and forced prostitution. Mainly based in Argentina, the group operated from the 1860s to 1939.
Originally called the Varsovia (Warsaw) Jewish Mutual Aid Society, the organization changed its name to Zwi Migdal in 1927, after the Polish envoy in Argentina filed an official complaint to the Argentine authorities, regarding the use of "Warsaw" in the name. The association's name was chosen to honor Luis Zvi Migdal, one of its founders.
The Zwi Migdal organization operated from the 1860s to 1939. After the First World War, it had four hundred members in Argentina. Its annual turnover was fifty million dollars at the turn of the century.Its center was Buenos Aires, with branch offices in Brazil (Rio de Janeiro, São Paulo and Santos), United States (New York City), Poland (Warsaw), South Africa, India and China