Cardinal Giorgio Marengo, I.M.C., Apostolic Prefect of Ulaanbaatar, Mongolia, was born on 7 June 1974 in Cuneo, Italy. From 1993 to 1995 he studied philosophy at the Theological Faculty of Northern Italy, and from 1995 to 1998, theology at the Pontifical Gregorian University, Rome. From 2000 to 2006 he completed further studies at the Pontifical Urbanian University, obtaining a licentiate and doctorate in missionology. He gave his perpetual vows on 24 June 2000 as a member of the I.M.C., and was ordained a priest on 26 May 2001.
After priestly ordination, he first exercised his pastoral ministry in Mongolia, in Arvaiheer (2000-2003). In 2003 he was assigned to the mission in Mongolia (the first I.M.C. missionary in Mongolia). Since 2016 he has served as Asia Regional Counsellor, superior for Mongolia and parish priest of Mary Mother of Mercy in Arvaiheer.
On 2 April 2020, the Holy Father Francis appointed him apostolic prefect of Ulaanbaatar, Mongolia, with episcopal character, assigning him the titular see of Castra severiana.
Created and proclaimed Cardinal by Pope Francis in the consistory of 27 August 2022, of the Title of S. Giuda Taddeo Apostolo.
- Dicastery for Evangelization.