Thorsten (Thorstein, Torstein, Torsten) is a Scandinavian given name.
The name is attested in medieval Iceland, e.g. Þorsteinn rauður Ólafsson (c. 850 – 880), Þōrsteinn Eirīkssonr (late 10th century), and in literature such as Draumr Þorsteins Síðu-Hallssonar.
The Old English equivalent of the Scandinavian and Norman name is Thurstan, attested after the Norman conquest of England in the 11th century as the name of a medieval archbishop of York (died 1140), of an abbot of Pershore (1080s) and of an abbot of Glastonbury (1090s).
The English given name Dustin is derived from a surname which in origin has been derived in turn from the Norman name Tustin, variant form of Turstin, Tostain, Toutain, etc.
As a modern given name, Thorsten and Torsten also see some popularity in the English-speaking world and in German-speaking Europe.