Vlahovic scored four minutes in at the Stadio Olympico on Thursday (AEST) by finishing off a counterattack, then had another possible goal waved off for offside in the 72nd.
It’s Juve’s record-extending 15th Coppa Italia title.
Juventus have fallen to fourth place in Serie A and there has been speculation that Massimiliano Allegri won’t return as manager.
Allegri lost his cool in added time when he grew angry at a decision, prompting him to rip off his jacket and be shown a red card for sarcastically applauding the referee.
The Bianconeri were banned from European competition this season due to a false accounting case.
Atalanta will face unbeaten Bayer Leverkusen in the Europa League final next week.
Juventus also beat Atalanta in the 2021 Cup decider and the Bergamo squad’s only senior-level trophy remains the 1963 Coppa Italia.
There were also reports of clashes between Juventus and Atalanta fans at a rest stop on the highway leading down to Rome earlier in the day.
AAP
