| Abbreviation | Definition |
|---|---|
| DAA | Dominion Automobile Association (Canada) |
| DAANS | Deafness Advocacy Association Nova Scotia |
| DAAPM | Diplomate of American Academy of Pain Management |
| DABIM | Diplomate of the American Board of Internal Medicine |
| DABR | Dayton Area Board of Realtors |
| DAc | Diplomate in Acupuncture |
| DACBN | Diplomate of American Chiropractic Board of Nutrition |
| DACVD | Diplomate of the American College of Veterinary Dermatology |
| DADA | Detroit Auto Dealers Association |
| DAFA | Dallas Area Fiber Artists |
| DANS | Data Archiving and Networked Services |
| DAOR | Downey Association of Realtors |
| DAPA | Dallas Area Paralegal Association |
| DAPA | Delaware Association for Public Administration |
| DAPE | Delaware Association of Professional Engineers |
| DARE | Developmental Association for Renewable Energies |
| DARG | Drug And Alcohol Reference Group |
| DAYL | Dallas Association of Young Lawyers |
| DBCX | Dlamuka Business ConneXions |
| DCBCA | District of Columbia Bicycle Courier Association |