TikTok is already banned in India, which was one of the app's largest markets before it was outlawed in June 2020. It is also blocked in Iran, Nepal, Afghanistan and Somalia.
TikTok is also fighting against a law passed by the US Congress which would ban the app from 19 January unless it is sold by ByteDance - its Chinese parent company.
The US Supreme Court has agreed to hear last-minute legal arguments from TikTok as to why it should not be banned or sold with a hearing scheduled for 10 January - just days before the 19 January deadline imposed by Congress.
The US government is taking action against the app because of what it says are its links to the Chinese state - links which TikTok and ByteDance have denied.