Unsuk Chin (Korean: 진은숙 [tɕin ɯn.suk]; born July 14, 1961) is a South Korean composer of contemporary classical music, who is based in Berlin, Germany. Chin was a self-taught pianist from a young age and studied composition at Seoul National University as well as with György Ligeti at the Hochschule für Musik und Theater Hamburg.

The recipient of numerous awards, she won the 2004 Grawemeyer Award for her Violin Concerto No. 1, the 2010 Music Composition Prize of the Prince Pierre Foundation for the ensemble piece Gougalōn and the Ernst von Siemens Music Prize in 2024. In 2019, writers of The Guardian ranked her Cello Concerto (2009) the 11th greatest work of art music since 2000, with Andrew Clements describing it as "perhaps the most original and entertainingly disconcerting of all of [her concertos], cast in four brilliant movements that never quite conform to type".