German Clarinet Duo was a German jazz clarinet duo with Theo Jörgensmann, clarinet and Eckard Koltermann, bass clarinet. The duo formed in 1984 and existed until 1998. The duo explores the synthesis of composition and improvisation.
German Clarinet Duo have collaborated with several other artists, including Karoly Binder, Maria de Alvear, Willem van Manen's Contraband or with Kenny Wheeler and Orkest de Volharding from Netherlands.