- his sister Talia Shire portrayed Connie Corleone throughout the trilogy
- his mother Italia Coppola serves as an extra in the restaurant meeting
- his father Carmine Coppola is the piano player in the Mattress sequence
- his sons Gian-Carlo Coppola and Roman Coppola can be seen as extras in the scene where Sonny beats up Carlo, and at the funeral
- and his daughter Sofia Coppola is the baby Michael Rizzi in the baptism (she was three weeks old at the time of shooting).
- Paulie says "sfortunato", which in Italian means "What a unlucky guy!" (ironic), referring to Carlo (wedding scene).
- Michael explains that Tom is a "consigliere," or a counselor;
- Vito calls Johnny Fontane a "finocchio," an offensive term for a homosexual
- Sonny refers to Paulie as a "stronzo," a term equivalent to "asshole"
- Carlo and Connie both say "vaffanculo" during their fight, which means "fuck you"
- Don Zaluchi calls the sale of drugs to children as an "infamita," or an infamy
- and both the Dons Corleone use the word "pezzonovante," which means ".95 caliber," or more accurately meaning "big shot".
- Hagen and Woltz negotiate Johnny Fontane's position at a table with a bowl of oranges on it, and later Woltz discovers his horse's severed head
- Don Corleone buys oranges right before he is shot
- Sonny drives past an advertisement for Florida Oranges before he is assassinated
- at the Mafioso summit, bowls of oranges are placed on the tables (specifically in front of those Dons who will be assassinated)
- Michael eats an orange while discussing his plans with Hagen
- before Don Corleone dies, he puts an orange peel in his mouth to playfully scare his grandson
- Tessio, who is executed for attempting to betray Michael, plays with an orange at Connie's wedding
- and Carlo Rizzi, who wears an orange suit right before Sonny beats him up, causes Sonny's death and is himself garrotted in retribution.
- The only deaths in the film that don't appear to have oranges foreshadowing them are the assassinations of Paulie, Sollozzo, McCluskey and Apollonia.