Fausto Tinelli (1959–1978) and Lorenzo "Iaio" Iannucci (1959–1978) were two Italian left-wing activists who were shot dead after a street confrontation in Milan on 18 March 1978 during the Years of Lead.

Various theories have been suggested for the double murder, involving the neo-fascist underground, the Italian intelligence agencies, the kidnapping of Aldo Moro, and local drug dealers.

[1][4]: 157 [5]: 117 After the strikes of the Hot Autumn of 1969, Italy entered into the Years of Lead (anni di piombo), a time of political upheaval in which various left-wing and right-wing groups fought in the streets.

One of them had fired eight 7.65 calibre bullets from a Beretta gun; the weapon had been hidden in a plastic bag in order not to leave any used cartridges behind.

[1] The investigation was formally ended by Judge Clementina Forleo in 2000 who said there was considerable evidence against Claudio Bracci [it], Carminati, and Corsi, but not enough to convict them.

[9] Another line of enquiry was that Iannucci and Tinelli were killed on account of the report they were compiling with other Leoncavallo activists about heroin selling in the local area, which linked the drug dealing to neo-fascists.

[4]: 157  The double murder has also been linked to the kidnapping of Moro, since it was later discovered that the Red Brigades had a safe house close to Tinelli's home.