Frassati is an Italian surname. Notable people with the surname include:
Dominique Frassati (1896–1947), French-Corsican painter Luciana Frassati Gawronska (1902–2007), Italian author Pier Giorgio Frassati (1901–1925), Italian canonized Catholic activist
See also Frassati Building, a 23-storey building in Sampaloc, Manila in the Philippines Frassati Catholic High School, a private high school in Harris County, Texas International Frassati Path of Pollone, a path in Piedmont