Charles Thomas Albert Louis Joseph Constantine, 5th Prince of Löwenstein-Wertheim-Rosenberg (18 July 1783 in Bartenstein (today part of Schrozberg) – 3 November 1849 in Heidelberg) was an Austrian officer during the Napoleonic Wars and from 1814 onwards, a member of the landless high nobility.

The noble zu Löwenstein family dates back to the days of Elector Palatine Frederick the Victorious (1425–1476).

His children from his morganatic marriage with Clara Tott were not able to inherit the Wittelsbach properties, so they formed a separate noble family.

The Löwenstein territories were divided between the newly elevated Grand Duchies of Baden and Hesse and the Kingdoms of Bavaria and Württemberg.

Throughout his life, Charles Thomas felt a strong bond with the Austrian Empire and its ruling Habsburg dynasty.

Thomas Charles married on 29 September 1799 in Ellwangen to Countess Sophie of Windisch-Grätz (1784–1848), a daughter of Count Joseph Nicholas of Windisch-Graetz.