Ivan pl. Zajc [ˈiʋaːn ˈzajts] (August 3, 1832 - December 16, 1914) was a prolific Croatian composer, conductor, director and teacher who for over forty years dominated Croatia's musical culture. Through his artistic and institutional reform efforts, he is credited with its revitalization and refinement, paving the way for new and significant Croatian musical achievements in the 20th century.