The traditional Leafs logo will take its place for the time being, at least until another sponsor is found.
MLSE and TikTok are still in discussions to continue their partnership.
"The Maple Leafs and MLSE are proud of the innovative partnership with TikTok and look forward to future projects together," said Dave Haggith, vice president of communications for Maple Leafs Sports and Entertainment.
The organization shouldn't have any trouble finding a new sponsor.
The Leafs will play their first game of the season tonight against the Montreal Canadiens.