Celtic secured the cinch Premiership title with four games to spare thanks to a 2-0 win over Heart of Midlothian in Edinburgh this afternoon.
Second-half goals from Kyogo Furuhashi and Hyeongyu Oh sealed the victory for Ange Postecoglou's side after the hosts had Alex Cochrane sent off just before the break.
In the day's other Premiership game, Rangers defeated Aberdeen 1-0 at Ibrox, with a 64th-minute goal from Todd Cantwell ending the Dons' winning run.
Neil Doncaster, chief executive of the SPFL, said: “Celtic deserve huge credit after being confirmed as winners of the cinch Premiership earlier today.
“To have gone undefeated in the League for over seven months is a real testament to how well Ange Postecoglou’s side have played.
“The club has also scored over 100 goals, and only dropped seven points across the season so far, which is a massive achievement.
“I would like to congratulate Celtic’s players, manager and directors on winning today’s title, which I’m sure the club’s supporters will thoroughly enjoy.
“There is still much to play for across the division, with European spots yet to be decided, as well as who finishes in the bottom two positions, and we are looking forward to the final four rounds of fixtures.”