Pierre Carniti (25 September 1936 – 5 June 2018) was an Italian politician and trade unionist.

Carniti was born in Castelleone, in the province of Cremona, Lombardy.

He was general secretary of CISL, the major Catholic trade union federation, between 1979 and 1985.

Unlike most other CISL leaders, who were aligned with Christian Democracy, Carniti was a member of the Italian Socialist Party (PSI).

In 1993, with Ermanno Gorrieri, he left the PSI to co-found the socialist party Social Christians (CS).