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.

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.