The Archdiocese of Winnipeg (Latin: Archidioecesis Vinnipegensis) is a Latin Church ecclesiastical territory or archdiocese of the Catholic Church that includes part of the Province of Manitoba, Canada. The archdiocese is the only diocese of the Latin Church in Canada that is immediately exempt to the Holy See, as it is not part of an ecclesiastical province.^[1] Located on the west side of the Red River, the Archdiocese of Winnipeg was created from the Archdiocese of Saint Boniface.

As of 2010, the archdiocese contains 92 parishes, 60 active diocesan priests, 26 religious priests, and 166,000 Catholics. It also has 27 religious brothers, 113 religious sisters, and 19 permanent deacons. The cathedral of the archdiocese is St. Mary's Cathedral in Winnipeg. The archbishop since 2014 is Richard Gagnon.

The Archdiocese was created in 1915 by Pope Benedict XV in his bull Inter praecipuas. Unusually, this bull made the archdiocese exempt and subject immediately to the Holy See. Historian John M. Reid, Jr. suggests that this decision was made due to ethnic conflicts in Winnipeg between Irish and French Catholics. The existing Archdiocese of St. Boniface was traditionally Francophone.^{[2]: 90–91}

The following is a list of the bishops and archbishops of Winnipeg and their terms of service:

• Roman Catholic Archdiocese of Saint Boniface
• Ukrainian Catholic Archeparchy of Winnipeg