DBA
- Bolkhovitinov DB-A
- C. C. Little
- DBA (airline)
- Dalbandin Airport
- Dallas Bar Association
- DarkBASIC
- Database administration
- Database administrator
- De Bellis Antiquitatis
- Defense Base Act
- Design basis accident
- Diamond–Blackfan anemia
- Dibenzylideneacetone
- Doctor of Business Administration
- Doing business as
- Double Bass Array
- Double bend achromat lattice
- Dynamic bandwidth allocation
- The Barge Association