Cardinal António Augusto dos Santos Marto, Bishop Emeritus of Leiria-Fátima, Portugal, was born on 5 May 1947 in the municipality of Chaves, in the Diocese of Vila Real, Portugal.

After completing his preparatory studies at the Minor Seminary of Vila Real, he attended courses in philosophy and theology at the Catholic University of Portugal, as a student of the Major Seminary in Porto.

In 1978, he obtained a doctorate in theology from the Pontifical Gregorian University.

On 7 November 1971 he was ordained a priest, and was incardinated into the clergy of Vila Real.

After returning from Rome, he stayed in the city of  Porto, as professor of theology at the Catholic University. He was also prefect of discipline of the Major Seminary of Porto and head of seminarians for the Diocese of Vila Real.

He was appointed titular Bishop of Bladia and Auxiliary Bishop of Braga on 10 November 2000, and was ordained a bishop on 11 February 2001.

On 22 April 2004 he was appointed as Bishop of Viseu.

On 22 April 2006 he was appointed as Bishop of Leiria-Fátima.

Since 28 January 2022 he has been Bishop Emeritus of Leiria-Fátima.

He was created and proclaimed cardinal by Pope Francis in the Consistory of 28 June 2018, and was assigned the titular church Santa Maria Sopra Minerva.

Member of:

• Dicastery for the Causes of Saints.