The EU told its staff to remove the app from phones it has issued, and also recommended they remove it from private devices on which official apps are installed.
India has banned TikTok outright because of security concerns.
Afghanistan has also banned it to prevent young people from "being misled".
TikTok's US future at stake in showdown at Congress
Who is TikTok chief Shou Zi Chew?
How a TikTok ban would - or wouldn't - work in practice