Mark Kaplan (born 30 December 1953, in Cambridge, Massachusetts) is an American violinist who studied at the Juilliard School under Dorothy DeLay. He is currently a professor at Indiana University's Jacobs School of Music. Before teaching at Indiana, Mr. Kaplan taught at UCLA in California. Mark Kaplan plays a violin made by Antonio Stradivari in 1685, which is named "The Marquis" after the Marchese Spinola, whose family owned the violin for several generations.