The order, which will go into effect in 45 days, comes after its administration warned it was stepping up efforts to purge “untrusted” Chinese apps.
Tencent, which owns the WeChat app, is also being targeted by similar measures.
TikTok is extremely popular among young people in the United States and elsewhere – and ByteDance operates a separate version of the app for the US market. WeChat is a messaging app widely used by Chinese expats who want to stay in touch with their friends and family back home.
These decrees were worded loosely – but Apple and Google may be banned from hosting these apps in their stores.
Mr. Trump’s administration has described TikTok and WeChat as “significant threats” – claiming that TikTok in particular can be used for disinformation campaigns for the benefit of the Chinese Communist Party.
The president said the United States “must take aggressive action against the owners of TikTok to prevent our national security.”
Earlier this week, Mr. Trump said he would support the sale of TikTok’s U.S. operations to Microsoft as long as the U.S. government gets a “substantial proportion” of the sale price.
The new executive order alleges: “TikTok, a video-sharing mobile application owned by Chinese company ByteDance Ltd, has been downloaded more than 175 million times in the United States and more than a billion times worldwide.
“TikTok automatically captures vast areas of information from its users, including the Internet and other information about network activity such as location data and browsing and search histories.
“This data collection threatens to allow the Chinese Communist Party to access Americans’ personal and proprietary information. ”
TikTok and WeChat claim they do not share data with the Chinese government.