Cardinal Giorgio Marengo, I.M.C., Apostolic Prefect of Ulaanbaatar, Mongolia was born on 7 June 1974 in Cuneo, Italy. He studied philosophy at the Theological Faculty of Northern Italy from 1993 to 1995 and theology at the Pontifical Gregorian University in Rome from 1995 to 1998. From 2000 to 2006 he continued his studies at the Pontifical Urban University, obtaining a licentiate and a doctorate in missionology. He made his perpetual vows as a member of the I.M.C. on 24 June 2000 and was ordained a priest on 26 May 2001.

After priestly ordination, he first exercised his pastoral ministry in Arvaiheer, Mongolia, from 2000 to 2003. In 2003, he was assigned to the mission in Mongolia (the first I.M.C. missionary in Mongolia). Since 2016 he has been as regional counsellor for Asia, superior for Mongolia and parish priest of Mary Mother of Mercy in Arvaiheer.

On 2 April 2020 Pope Francis appointed him Apostolic Prefect of Ulaanbaatar, Mongolia, with episcopal character, assigning him the titular see of Castra Severiana. He was ordained 8 August 2020.

He was created and proclaimed cardinal by Pope Francis in the Consistory of 27 August 2022, and was assigned the titular church S. Giuda Taddeo Apostolo.

Member of:

• Dicastery for Evangelization.