Juventus secured the 2014 Serie A title with three games to spare after closest challengers Roma were stunned 4-1 away to relegation-haunted Catania.
It is the Turin giants' 30th official title in Italy's top flight and third in succession under coach Antonio Conte.
Juventus remain on course to become the first team in Serie A to finish with at least 100 points.
After hosting Atalanta on Monday, Juve travel to Roma next week and close out the season at home to Cagliari.
Juventus had congregated at a hotel in Turin yesterday afternoon to watch Roma's upset on television and immediately after the final whistle the celebrations began.
"We are the champions, we are the champions," read a post from the club's official Twitter feed alongside pictures of the players dressed in identical black t-shirts making reference to the club's belief they have won 32 titles.
Juventus were stripped of two Serie A titles, which they won in 2005 and 2006, following their demotion to Serie B for their role in the Calciopoli match-fixing scandal.
"After the five-title winning streak, this is a feat that no other great Juve sides had achieved," Juve coach Antonio Conte said.
Club CEO Beppe Marotta heaped praise on the 44-year-old coach: "We said and knew that it would be a difficult season, but we were able to count on a superb coach and team who had great hunger and motivation to achieve this third title.
