V letech 1989 až 1997 byl profesorem a rektorem v seminářích v Montrealu a Edmontonu, od roku 1997 se stal profesorem v Papežském institutu Jana Pavla II. pro studium manželství a rodiny.
Marc Armand Ouellet PSS ( French pronunciation: [maʁk welɛ]; born 8 June 1944) is a Canadian Catholic prelate who served as prefect of the Dicastery for Bishops and president of the Pontifical Commission for Latin America from 2010 to 2023.