DAB is an abbreviation that can stand for several things:

• Digital Audio Broadcast
• Daytona Beach International Airport
• The Daba language of Cameroon
• Dave & Buster's restaraunts in the United States
• the German Aikido Federation , or Deutschen Aikido-Bundes eV
• Deutscher Akademikerinnen Bund e.V. , an academic women's organization in Germany
• dAb is an art and graphic design computer system developed at the University of North Carolina.
• Dortmunder Actien Brauerei, producers of Dab lager.
• DAB Bank is a major European brokerage firm.
• Diaminobenzidene - a chemical used in western blotting
• Democratic Alliance for the Betterment of Hong Kong, a Hong Kong political party.
• Drum and Bass - a form of electronic music.

It can also, of course, be an abbreviation for a disambiguation page like this one.