Gianetti is a surname. Notable people with the surname include:
Gianetti Bonfim (born 1965), Brazilian racewalker
Gustavo Gianetti (born 1979), Brazilian model
Lautaro Gianetti (born 1993), Argentine footballer
Marty Gianetti (born Fredrick Martin Jannetty in 1960), American professional wrestler
Mauro Gianetti (born 1964), Swiss bicycle racer
Noé Gianetti (born 1989), Swiss cyclist
