Oswald Orth (1832–1920) was the first professor of English Literature at the University of Liège.
Orth was born in 1832 in Weilbach, now a subdivision of Flörsheim am Main, in the Duchy of Nassau.
In 1869 he obtained a doctorate from the University of Rostock with a thesis on the philosophy of history.
[1] He was president of the organising committee of the second conference of the Association belge des professeurs de langues vivantes, held in September 1909.
[2] Orth retired in 1904, and was succeeded as professor of English Literature by his former doctoral student, Paul Hamelius, and in comparative grammar by Joseph Mansion.