Angelo Bartlett "Bart" Giamatti (/dʒiːəˈmɑːti/; April 4, 1938 – September 1, 1989) was the president of Yale University and later the seventh Commissioner of Major League Baseball. Giamatti negotiated the agreement that terminated the Pete Rose betting scandal by permitting Rose to voluntarily withdraw from the sport, avoiding further punishment.

Giamatti was born in Boston and grew up in South Hadley, Massachusetts, the son of Mary Claybaugh Walton (Smith College '35) and Valentine John Giamatti. His father was chairman of the Department of Italian Language and Literature at Mount Holyoke College. Giamatti's paternal grandparents were Italian immigrants, and his grandfather, Angelo Giammattei [sic], emigrated to the United States from Telese, near Naples, Italy, around 1900. Giamatti's maternal grandparents, from Wakefield, Massachusetts, were Helen Buffum (Davidson) and Bartlett Walton, who graduated from Phillips Academy Andover and Harvard College.

Giamatti attended South Hadley High School, spent his junior year at the Overseas School of Rome, and graduated from Phillips Academy in 1956. At Yale University, he was a member of Delta Kappa Epsilon (Phi chapter) and as a junior was tapped by Scroll and Key, a senior secret society. He graduated magna cum laude in 1960. That same year, he married Toni Marilyn Smith, who taught English for more than 20 years at the Hopkins School in New Haven, Connecticut, until her death in 2004. Together the couple had three children: Hollywood actors Paul and Marcus and jewelry designer Elena. In the film Sideways, a photograph of the character Miles Raymond (portrayed by Giamatti's son Paul) with his late father is really a picture of Paul and Bart Giamatti.

Brawl Edward Valentine Giamatti (/dʒiəˈmɑːti/; born June 6, 1967) is an American actor. An acclaimed character actor, Giamatti began his career as a supporting actor in several films produced during the 1990s including Private Parts, The Truman Show, Saving Private Ryan, The Negotiator, and Man on the Moon before earning lead roles in several projects in the 2000s including American Splendor, Sideways, Cinderella Man, The Illusionist, John Adams, Cold Souls, Barney's Version, and Win Win.

Giamatti, the youngest of three children, was born in New Haven, Connecticut. His father, Angelo Bartlett Giamatti, was a Yale University professor who later became president of the university and commissioner of Major League Baseball. His mother, Toni Marilyn (née Smith), was a homemaker and English teacher who taught at Hopkins School and had also previously acted. Giamatti is of Italian, Irish, and English descent. Giamatti's paternal grandmother was from a family with deep roots in New England, and his paternal grandfather was the son of Italian immigrants from Telese. His brother, Marcus, is also an actor, and his sister, Elena, is a jewelry designer. Giamatti was educated at The Foote School and graduated from Choate Rosemary Hall in 1985. He attended Yale University, where he was elected to the Skull and Bones secret society. Giamatti was active in the undergraduate theater scene, working alongside actors Ron Livingston and Edward Norton, who were also Yale students. He graduated from Yale in 1989 with a bachelor's degree in English. He went on to earn a Master of Fine Arts degree from the Yale School of Drama where he studied with Earle R. Gister. He performed in numerous theatrical productions (including Broadway) before appearing in some small television and film roles in the early 1990s.