Don Osvaldo "Ozzie" Altobello (1900-1980) is a fictional character in the film The Godfather: Part III, and the novels The Godfather Returns and The Godfather's Revenge. In the film, he is portrayed by Eli Wallach.
He is an aging gangster and longstanding ally of the Corleone crime family. He was the consigliere of Rico Tattaglia from 1955 to 1961. He has been the Don of the Tattaglia Crime Family, since 1962. By the time of Godfather III, he has become a close friend and ally of Michael Corleone. Altobello even donated one million dollars so he could be a part of the Vito Corleone Foundation. Aside from being an associate of Michael's, Altobello is also Connie Corleone's godfather.
Michael becomes suspicious of Altobello's motives after Joey Zasa, a Corleone family rival, orchestrates an assassination attempt on Michael and other family heads assembled for a Commission meeting. Altobello leaves the conference room before the attack. Michael escapes without injury, but many of the others in the room are killed. Michael then instructs his nephew Vincent to go to Altobello and pledge his allegiance to him, without promising to betray Michael. (Vito Corleone enlisted Luca Brasi to spy on the rival Tattaglia family in much the same way in The Godfather Part I however Luca didn't live to see the start of the mission as a paranoid Virgil Sollozzo his allies the Tattaglias kill him first.)
While in Sicily, Altobello enlists the services of the infamous assassin, Mosca, who conspires to kill Michael at an opera house when Anthony Corleone was set to debut in Cavalleria Rusticana. Before the performance, Connie presents him with a box of cannoli as a birthday gift. Altobello enjoys the cannoli during the performance, and dies of poisoning as a visibly saddened, but relieved Connie watches him through her opera glasses.