Gerardo D'Ambrosio (29 November 1930 – 30 March 2014) was an Italian magistrate and politician.

Born in Santa Maria a Vico, Caserta, D'Ambrosio graduated in law in Naples in 1952.

[1][2] In 1957 he was assigned to the Public Prosecutor at the Court of Nola, then he was transferred to the Court of Voghera, and finally in Milan;[1] there D'Ambrosio conducted the criminal investigation of the Piazza Fontana bombing, and was prosecutor in the Banco Ambrosiano trial, among other things.

[2] In 1989, he was chosen to direct the department against organized crime and since 1991 he directed the special department covering the crimes against the public administration.

[2] In 1992 he entered the mani pulite pool of magistrates which gave him a large notoriety.