Frank Leo was born on 30 June 1971 in Montreal, the son of Italian immigrant parents. He entered the seminary in 1990, took a bachelor's degree in philosophy in 1992, and was ordained a priest for Montreal on 14 December 1996. After parish work — including Notre-Dame-de-la-Consolata and Saint-Raymond-de-Peñafort — he completed a licentiate and a doctorate in theology (2005) specialising in Marian studies at the International Marian Research Institute of the University of Dayton, Ohio.
From 2006 to 2008 he trained at the Pontifical Ecclesiastical Academy in Rome, then served the Holy See's diplomatic service in Australia (2008–2011) and at the Study Mission in Hong Kong (2011–2012). Back in Montreal he directed the major seminary and taught dogmatics, served as general secretary of the Canadian Conference of Catholic Bishops (2015–2021), and became vicar general of Montreal in 2021. Appointed auxiliary bishop of Montreal on 16 July 2022 and consecrated that September, he was named Metropolitan Archbishop of Toronto on 11 February 2023 and installed on 25 March 2023. He is founding president of the Canadian Mariological Society and a member of the Priestly Fraternity of St. Dominic.
Pope Francis created him cardinal on 7 December 2024, with the title of Santa Maria della Salute a Primavalle. The speed of his rise is the honest difficulty of his profile: he had been a bishop for only a few months when he took over Canada's largest archdiocese, and he now leads it amid steep secularisation, while intervening publicly on assisted dying and on religious-freedom legislation — stances that have drawn both strong support and criticism.
Consequential Quotes
I am humbled and honoured to receive this appointment from the Holy Father. I pray and rely on the prayers of the faithful in Toronto that I will be a worthy servant of the Lord Jesus in fulfilling my responsibilities as a member of the College of Cardinals and to continue in my primary role as shepherd of the faithful of the Archdiocese of Toronto. I entrust to the Blessed Mother Mary, myself and this new ministry of service to the Universal Church and to the Successor of St. Peter, the Pope.
My cellphone lights up like a Christmas tree and I was getting a lot of messages that I did not understand.
It has so many Catholics and is a vibrant community. I believe the Holy Father, if I can interpret his thoughts, is recognizing the Catholic community of Toronto first of all.
I think the world really needs role models, witnesses, the true heroes and heroines of the faith.
All of (the dicasteries) are important and I will say ‘yes’ to wherever I’m called to serve.
Major Works & Initiatives
Doctorate in Theology (Mariology), International Marian Research Institute, University of Dayton
His doctoral work specialised in Marian studies, the scholarly field that has shaped his preaching and his episcopal motto, ‘Do whatever He tells you.’
General Secretary, Canadian Conference of Catholic Bishops
Six years running the national bishops' conference secretariat in Ottawa, the administrative apprenticeship behind his rapid later promotions.
Chancellor, University of St. Michael's College, Toronto
Installed as the university's sixth Chancellor on 12 June 2023, presiding at convocations and conferring degrees.
Seeking the Kingdom of God Above and Beyond All Other Things (pastoral letter)
His inaugural pastoral letter to the Archdiocese of Toronto, released 1 January 2024, a theological and pastoral meditation on the Kingdom of God.
Controversies
Criticism that his Toronto teaching has not listened enough
Contested: when he became a cardinal in December 2024, some Toronto Catholics were reported as disappointed by his pastoral letter and by his emphasis on defending Catholic teaching — including on contraception — over listening, and by the absence of explicit mention of 2SLGBTQ+ Catholics; he had not, at that point, responded to an invitation to meet LGBTQ+ Catholics in the city. Leo's defenders, and Leo himself in his first greeting to the archdiocese, answer that his door is open to everyone in Toronto's diversity and that a bishop's duty to teach the faith is not optional. The criticism rests largely on one December 2024 report and is presented here as reported, not adjudicated.