The Archdiocese of Ottawa is a Roman Catholic archdiocese located in Ottawa, Canada. It serves as the central governing body for Catholic parishes and institutions in the region. Established in 1820, it has a rich history and plays a significant role in the spiritual life of the community. The archdiocese is led by an archbishop, who oversees various activities, including religious services, education, and social outreach. It is part of the larger ecclesiastical province of Ottawa, which includes several other dioceses in Ontario. The archdiocese also engages in ecumenical dialogue and interfaith initiatives to promote understanding among different religious communities.