Roman Catholic Diocese of Smolensk

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Diocese of Smolensk Dioecesis Smolenscensis
Coat of arms
Location
Country	Polish–Lithuanian Commonwealth/Russia
Ecclesiastical province	Gniezno
Information
Denomination	Catholic Church
Sui iuris church	Latin Church
Rite	Roman Rite
Established	1636
Dissolved	1818

The Diocese of Smolensk was a Latin Church ecclesiastical territory or diocese of the Catholic Church. Founded in 1636 and dissolved in 1818, it was initially located within the Polish–Lithuanian Commonwealth, and later in Czarist Russia.