The St. Charles Borromeo Cathedral [1] (French: Cathédrale Saint-Charles-Borromée de Joliette)[2] is the name given to a religious building belonging to the Catholic Church and is located in Joliette,[3] a town in the administrative region of Lanaudière in the southern part of the province of Quebec (Eastern Canada).

[4] The headquarters of the diocese of Joliette was built between 1887 and 1892 according to plans by the architects Maurice Perrault and Albert Mesnard.

It was declared as a protected building (immeuble patrimonial) by the city of Joliette in 1999.