DND is an acronym that stands for "Do Not Disturb". It is commonly used in digital communications to indicate that the person does not want to be contacted, usually when they are sleeping, working, or on vacation. It can also refer to a privacy feature for smartphones and other digital devices that temporarily disables incoming calls, texts, and notifications.

On TikTok, DND is often used to refer to the "Do Not Disturb" feature on iPhones, which has been the subject of viral videos on multiple occasions. It can also be used to abbreviate the role-playing game Dungeons & Dragons, which has a large community on TikTok.

In some cases, DND can have other meanings depending on the context. For example, on Princess Cruises, DND on the Summary of Services may mean "Do Not Disclose". In computing, DND can stand for "Drag and Drop".