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 was established in 1625 on Polish–Lithuanian Commonwealth territory, previously without proper Ruthenian Catholic jurisdiction.
Earlier in 1611, after Smolensk was occupied by the Polish army in the same year, there was established the Roman Catholic Diocese of Smolensk but in 1654 Smolensk returned to be a Russian city and both the Roman Catholic and the Greek Catholic Bishops had to go in the Polish territory.
It was suppressed in 1778, without a successor jurisdiction, at its last incumbent's death (territory formally united to the Archeparchy of Polotsk-Vitebsk).