Kopetz is a surname. Notable people with the surname include:
Barry Kopetz (born 1951), American music composer and conductor Hermann Kopetz (born 1943), Austrian computer scientist Ladislaus Michael Kopetz (1902–1966), Austrian crop farming scientist Vera Kopetz (1910–1998), German painter and graphic artist Paul Kopetz, Australian/Polish music composer, arranger, clarinettist, conductor, and music educator