Julius Guz was a Russian, Romanian, and Soviet pianist and music teacher. He was born in Odessa on March 28 (April 9), 1885, to Moishe-Gersh Yudkovich Guz and Ekaterina Yakovlevna Guz. He graduated from the performance school of the Vienna Conservatory in 1905 and studied at the Krakow Conservatory from 1905 to 1907. From 1912 to 1915, he studied piano with M. N. Barinova at the Saint Petersburg Conservatory.
Guz worked as a pianist in Leipzig and Berlin from 1907 to 1910, then taught private music courses in Odessa in 1911. From 1915 to 1921, he taught at a music school in Chisinau. He later taught at the private Unirea Conservatory there from 1921 to 1936 and at the Municipal Conservatory from 1936 to 1940. He joined the Chisinau Musical Society in 1922 and performed in Berlin, Leipzig, Krakow, Odessa, and Chisinau.
During World War II, Guz was evacuated to Almaty, where he taught at a music school. From 1944 to 1957, he headed a department at the Chisinau Conservatory. His students included S. T. Nyaga, D. G. Fedov, A. I. Dailis, S. Karlik-Levinson, H. Talmatskaya, and O. M. Yanku. Guz died in Chisinau on September 18, 1971.