Charles Clément Auguste Moeller (1838–1922) was a Belgian historian.

[1][2] He himself became a lecturer at the same university in 1863, teaching courses on the political history of classical antiquity and of the Middle Ages.

[1] His son, Alfred Alphonse Moeller, became a colonial administrator, governor of Orientale Province in the Belgian Congo, and later a businessman.

[3] To mark his fifty years of teaching at the university (1863–1913), a two-volume Festschrift was published by former members of the historical seminar in Leuven, Mélanges d'histoire offerts à Charles Moeller (Leuven and Paris, 1914).

[1] In 1916 he was appointed director of the Belgian Historical Institute in Rome.