In a merciless show of dominance, Sinner beat his opponent 6-3 7-6 (7-4) 6-3.
Sinner is now the first Italian player to win three Grand Slam crowns.
He shattered Nicola Pietrangeli's record who had once won back-to-back men's titles at Roland Garros.
"It's an incredible tournament for me, I hope I can keep it going," Sinner was quoted as saying by BBC.
Failing to create a single break point in the match, Sinner looked helpless in front of his dominating opponent who remained untroubled.
Despite putting up strong shows, Alexander Zverev will need to wait for a longer period to registered his first Grand Slam victory.
He lost all his Grand Slam final matches which started with a defeat in 2020 US Open then 2024 French Open and now in Australia.