Karl Wilhelm Ludwig Müller (1813, Electorate of Brunswick-Lüneburg - 1894, Göttingen; Latin: Carolus Müllerus) is best known for his still-useful Didot editions of fragmentary Greek authors, especially the monumental five-volume Fragmenta Historicorum Graecorum (1841–1870), which is not yet completely superseded by the series Die Fragmente der griechischen Historiker begun by Felix Jacoby.