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Carlo Furno (born 2 December 1921) is an Italian cardinal of the Catholic Church.

Furno was born in Bairo, Piedmont. He had a long career in the diplomatic service of the Holy See, serving as Apostolic Nuncio (Papal Ambassador) to Peru, Lebanon, Brazil and Italy.

He was created Cardinal-Deacon of Sacro Cuore di Cristo Re on 26 November 1994. After ten years he opted to become Cardinal Priest of that church. Since 2005 he has been Cardinal-Priest of Sant'Onofrio.

Pope John Paul II appointed him Grand Master of the Equestrian Order of the Holy Sepulchre of Jerusalem in 1995. This Order, like that of the Knights of Malta is a member of many international bodies and has observer status at others (such as the United Nations). Cardinal Furno resigned this office in June 2007 and was succeeded by American Archbishop John Patrick Foley, who had been serving as the President of the Pontifical Council for Social Communications, an important department of the Roman Curia.