Gianni Puccini
- Birthday: 1914-11-09
- Deathday: 1968-12-03
- Place of birth: Milan, Lombardy, Italy
- Also know as: Jeff Mulligan
Gianni Puccini (9 November 1914 – 3 December 1968) was an Italian screenwriter and film director. He wrote for 32 films between 1940 and 1967. He also directed 18 films between 1951 and 1968.
