What is "giamatti"

Giamatti is a surname (originally Giamattei in Italy, ). Notable people with the surname include:

• A. Bartlett Giamatti (1938–1989), president of Yale University and later Commissioner of Major League Baseball
• Marcus Giamatti (born 1961), American actor, son of Bart and brother of Paul
• Paul Giamatti (born 1967), American actor, son of Bart