US President Donald Trump announced on Thursday that he had given social media platform TikTok another 90 days to find a non-Chinese buyer or be banned in the United States.

"I've just signed the Executive Order extending the Deadline for the TikTok closing for 90 days [September 17, 2025]," Trump posted on his Truth Social platform, putting off the ban for the third time.

A federal law requiring TikTok's sale or ban on national security grounds was due to take effect the day before Trump's January inauguration.

The Republican, whose 2024 election campaign relied heavily on social media, has previously said he is fond of the video-sharing app.

"I have a little warm spot in my heart for TikTok," Trump said in an NBC News interview in early May. "If it needs an extension, I would be willing to give it an extension."

TikTok on Thursday welcomed Trump's decision.

"We are grateful for President Trump's leadership and support in ensuring that TikTok continues to be available for more than 170 million American users," the platform said in a statement. (AFP)