Roberto Calvi (13 April 1920 – 17 June 1982) was an Italian banker, dubbed "God's Banker" (Italian: Banchiere di Dio) by the press because of his close association with the Holy See. He was a native of Milan and was Chairman of Banco Ambrosiano, which collapsed in one of Italy's biggest political scandals.

Calvi's death in London in June 1982 is a source of enduring controversy and was ruled a murder after two coroners' inquests and an independent investigation. Five people were acquitted of murdering Calvi in Rome in June 2007. Popular speculation has linked the Vatican Bank, the Mafia, and the clandestine Propaganda Due to his death.