Tosato is an Italian surname. Notable people with the surname include:
Egidio Tosato (1902–1984), Italian politician and drafter of the Italian Constitution Gian Luigi Tosato (born 1940), Italian jurist and lawyer Giovanna Tosato (born 1949), Italian physician-scientist and cancer researcher Mario Tosato (1930–1996), Italian racing cyclist Paolo Tosato (born 1972), Italian politician