Diocese of Sejny

Diocese of Sejny or rather Augustów

Dioecesis Sejnensis seu Augustoviensis

Polish: Diecezja sejneńska, czyli augustowska
Basilica of the Visitation of the Blessed Virgin Mary in Sejny, former cathedral church of the diocese
Location
Country Congress Poland
Poland
TerritorySejny
Ecclesiastical provinceWarsaw
Information
DenominationCatholic
Sui iuris churchLatin Church
RiteRoman Rite
Established1818
Dissolved1925
CathedralCathedral of the Visitation of the Blessed Virgin Mary in Sejny

The Diocese of Sejny, properly the Diocese of Sejny or rather Augustów (Latin: Dioecesis Sejnensis seu Augustoviensis), was a diocese of the Latin Church of the Roman Catholic Church with the seat of its bishops in Sejny, which existed from 1818 to 1925. In 1925 it was suppressed and divided into the Diocese of Łomża and the Diocese of Vilkaviškis.

In 2009, Sejny was established as a titular see. The title of the first titular bishop of Sejny was given to archbishop Jan Pawłowski, Apostolic Nuncio to the Republic of the Congo and Gabon.