The Diocese of Victoria (Latin: Dioecesis Victoriensis in Insula Vancouver) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in the Canadian province of British Columbia.

A suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of Vancouver, the diocese's cathedral is St. Andrew's Cathedral and its present diocesan bishop is Gary Gordon.

The following are the lists of Bishops and their years of service: Greater Victoria Courtenay Campbell River Gold River Hornby Island Chemainus Duncan Lake Cowichan Ladysmith Gabriola Island Mayne Island Pender Island Salt Spring Island Mill Bay Shawnigan Lake Nanaimo Parksville Port Alberni Tofino Ucluelet Alert Bay Port Hardy Port McNeill Port Alice Sayward Tahsis

Religious institutes of women The Diocese managed two residential schools in British Columbia.

[16] Upon the discovery of the remains of 215 children at Kamloops Indian Residential School, the diocese released a statement of apology and commitment.