The Diocese of Paisley (Latin: Dioecesis Pasletanus) is an ecclesiastical territory or diocese of the Latin Rite of the Catholic Church in Scotland. Erected on 25 May 1947 from the Archdiocese of Glasgow the diocese covers the historic county of Renfrewshire (now the local government areas of Renfrewshire East Renfrewshire and Inverclyde) and is 580 km2 (220 sq mi) in area making it the smallest diocese by area in Scotland.