- CAAB stands for Certified Applied Animal Behaviorist
- CAAB stands for Civil Affairs Battalion
- CAAB stands for Campaign for the Accountability of American Bases (UK)
- CAAB stands for Civil Aviation Authority of Bangladesh
- CAAB stands for Codes for Australian Aquatic Biota
- CAAB stands for Capital Area Asset Building Corporation
- CAAB stands for Cute As A Button
- CAAB stands for Centro Agro Alimentare Bologna
- CAAB stands for Collective Agreement Arbitration Bureau (Canada)
- CAAB stands for Certified Australian Angus Beef Pty. Ltd.
- CAAB stands for Call Accounting and Billing
- CAAB stands for Canadian Advertising Advisory Board
- CAAB stands for California Apricot Advisory Board
- CAAB stands for Communauté d’Agglomération de l’Aéroport du Bourget (French: Agglomeration Community of Le Bourget airport; Le Bourget, France)
- CAAB stands for Colstrip Area Association of Business (Montana)
- CAAB stands for Command Assignment Advisory Board
CAAB