The Roman Catholic Diocese of Nelson (Latin: Dioecesis Nelsonensis) (erected 22 February 1936) is a suffragan of the Archdiocese of Vancouver.

In the late 1830s French Canadians in the Oregon Territory petitioned the Quebec bishops to have missionary priests sent beyond the Rocky Mountains.

In response to this plea, Fathers François-Norbert Blanchet and Modeste Demers were sent West to a remote part of the Quebec diocese referred to as New Caledonia by the Hudson’s Bay Company.

Castlegar Cranbrook Creston Fernie Fruitvale Golden Grand Forks Invermere Kelowna Keremeos Kimberley Nakusp

Nelson Oliver Osoyoos Penticton Princeton Revelstoke Rossland Sparwood Summerland Trail West Kelowna Winfield