Sidney Harth, (October 5, 1925 – February 15, 2011), violinist and conductor.

Sidney Harth was a violin soloist and conductor. He was born in Cleveland and studied at the Cleveland Institute of Music, where his teachers included famous Romanian violinist and composer George Enescu. He was the first American to win the Wienawski Violin competition in Poland in 1957, an impressive feat during the Cold War, (much like pianist Van Cliburn winning the Tchaikovsky Competition in Moscow the following year.)

Harth went on to become concertmaster for the New York Philharmonic, Chicago Symphony, Los Angeles Philharmonic, and the Louisville Orchestra, where he was also an associate conductor. Conducting eventually became his primary focus. He held conducting posts in South Africa, Israel, Puerto Rico, and the U.S.

Sidney Harth also excelled as an instructor, serving on the faculties of Mannes College, Yale, Hartt School, University of  Texas (Houston), Duquesne University, and Carnegie Mellon University, where he was head of the music department. He died in Pittsburgh from respiratory failure.