DD may refer to any of the following:
1. Linux and Unix command, see the dd command page for further information.
2. Short for double density, DD is a type of floppy diskette. See our double density disk definition for further information.
4. Shorthand for don't die, DD is a term often used in chat communications and computer gaming. Below is an example of how this may be used while playing a game.
Ok, this time DD!