Karl Theodor
Karl Theodor or Carl Theodor is the name of the following rulers:
- Karl Theodor (Palatinate and Bavaria) (1724–1799), Elector of the Palatinate and Bavaria
- Karl Theodor von Dalberg (1744–1817), Prince Archbishop of Mainz
- Carl Theodor in Bavaria (1839–1909), German ophthalmologist, Duke in Bavaria