Julian Gordon Rushton (born 22 May 1941) is an English musicologist. He has contributed the entry on Mozart in The New Grove Dictionary of Opera and several other articles in The New Grove Dictionary of Music and Musicians and other reference works. He has written a critical study of the style of Hector Berlioz and was involved in critical editions of that composer's works. In 1999, he published an analysis of Elgar's Enigma Variations. His book Coffee with Mozart (2007) has been translated into German.
Rushton studied at Cambridge and received a doctorate from Oxford, supervised by J. A. Westrup. He taught at the University of East Anglia and then at Cambridge, holding a fellowship at King's College from 1974 until 1981, before being appointed to the West Riding Chair of Music at the University of Leeds. He retired in 2005.