A 5-0 win at Dundee United on Saturday put Celtic 18 points clear of second-placed Rangers, who have five matches to play.
It was a fourth-straight league title for Celtic and kept them on course for a sixth domestic treble in the last nine seasons.
Brendan Rodgers' men have already won the Scottish League Cup and have reached the final of the Scottish FA Cup, against Aberdeen on May 24.
Rangers won the last of their 55 league titles in 2021 but could not stave of their Old Firm rivals for long, with Celtic overseeing an utterly dominant period in the Scottish game.
They've captured 21 of the last 26 domestic trophies on offer in Scotland and that could soon be 22 from 27 if Celtic win a third-straight Scottish FA Cup title.
"Amazing performance, outstanding," Celtic captain Callum McGregor said. "It means the world to us."
For Rodgers, it's an 11th trophy — and fourth league title — from his two spells in charge. He is bidding for a third treble at the helm of Celtic.
"Leading into this game, there was a little bit of negativity around the league and the competition, but we can only concentrate on ourselves. Our mentality has been so, so good," Rodgers said.
"The competition is for everyone. When it matters, this team has produced. It's not our fault we're 18 points clear and scoring goals."
Rodgers insisted he would "200 percent" be at Celtic for next season, saying: "I have never been happier here."
"It's important," he added, "to keep the motivation and the hunger at this stage of the season and we know what we want to achieve and what records we want to beat."
The team's fans disrupted the game against Dundee United early in the first half by throwing dozens of tangerines onto the field in protest at the host's pricing of tickets for away supporters.
Celtic's fans chanted about the prices as the pieces of fruit were lobbed on, and a banner was held up that read: "Enjoy the fruits of our labour."
The tangerines were cleared off the field by stewards and Celtic players.
Before kick-off, a minute's silence was held for Pope Francis on the day of his funeral. Celtic fans paid tribute with banners and Vatican flags and chanted "Papa Francesco" before the period of silence began.
A Celtic delegation, including Rodgers and his playing squad and staff, met Pope Francis in a private audience after a game against Lazio in December 2023.
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