David Nathaniel Baker Jr. (December 21, 1931 – March 26, 2016) was an American jazz composer, conductor, and musician from Indianapolis, as well as a professor of jazz studies at the Indiana University Jacobs School of Music. Baker is best known as an educator and founder of the jazz studies program. From 1991 to 2012, he was conductor and musical and artistic director for the Smithsonian Jazz Masterworks Orchestra. He has more than 65 recordings, 70 books, and 400 articles to his credit.