Thomas van Dun (The Netherlands, 1995) is a contemporary composer and songwriter. He has written for diverse ensembles including multiple symphony orchestras. Van Dun made his debut as a songwriter and producer in the summer of 2021.

His work for classical ensembles is distinguished by rhythmical vividness, colourful use of instrumentation, and grand spacial gestures. His pieces have been commissioned for orchestras and events such as the Nederlands Studenten Orkest, the Residentie Orkest, the inauguration for the Olympic Games of 2018. Coming August of 2021, his percussion concerto In Transit will premier during the 2021 edition of the Nederlands Studenten Orkest concert series, with Dominique Vleeshouwers as the soloist. In July 2021, his first dance-house track Empty Chest will be released featuring singer Gavin-Viano.

Van Dun has studied with composers such as Martijn Padding, Yannis Kyriakides, Dai Fujikura, and Calliope Tsoupaki at the Royal Conservatoire of The Hague and the Royal College of Music in London.