Julie Kopacsy-Karczag, néeJulie Kopacsy, also Julie Kopacsi or Julie Kopacsi-Karczag[1] (b. 13 February 1867 in Komárom, Austria-Hungary [now Komárno, Slovakia] – d. 26 January 1957 in Vienna) was a Hungarian opera singer (soprano).
She worked as an operettasoubrette in 1889 in Debrecen, from 1891 to 1894 at the Volkstheater in Budapest, from 1894 to 1896 at the Carltheater in Vienna. She gave guest performances in Berlin, America, Russia and Prague and was then active again in Vienna.