DMB may stand for:
- Digital Multimedia Broadcasting, a digital radio transmission technology
- DaMarcus Beasley, nicknamed DMB, American soccer player
- Dave Matthews Band, a U.S. rock band
- Del McCoury Band, a U.S. bluegrass band
- Delaware Memorial Bridge, a set of twin suspension bridges on the Delaware River
- Diamond Mind Baseball, a computer baseball simulation game
- Dimethylbutane
- 1,2-diamino-4,5-methylenedioxybenzene, used as fluorescence label