Trump made the announcement to reporters Friday on Air Force One as he returned from Florida.
“As far as TikTok is concerned, we’re banning them from the United States,” Trump said.
The company’s operations in the U.S. has been under review by the secretive Committee on Foreign Investment in the United States.
Trump said he could use emergency economic powers or an executive order to enforce the action, insisting, “I have that authority.”
Miller reported from Washington.