The Ruthenian Catholic Archeparchy of Smolensk (Latin: Dioecesis Smolenscensis Ruthenorum, Polish: Arcybiskupstwo smoleńskie) was an archeparchy of the Metropolis of Kiev, Galicia and all Ruthenia in the Ruthenian Uniate Church from 1625 to 1778. It was situated in the Polish–Lithuanian Commonwealth in what is today the Smolensk Oblast of the Russian Federation. It used the Byzantine Rite in its services. It was also known as the Ruthenian Catholic Archdiocese of Smolensk or Smoleńsk of the Ruthenians.