The Archdiocese of Bar is a Latin Church diocese of the Catholic Church in Montenegro. It is centred in the city of Bar. It was erected as a diocese in the 9th century and elevated to an archdiocese in 1089. The Archbishopric was by the Pope's decree abolished some time after 1140, until it was restored by the Serbian medieval Nemanjić dynasty in 1199.

Bar is a town and seaport in Coastal region of Montenegro. It is the capital of the Bar Municipality and a center for tourism. According to the 2023 census, the city proper had 15,868 inhabitants, while the total population of Bar Municipality was 46,171.