DBL
- DBL Arena
- Dansk Biografisk Leksikon
- Darwin Baseball League
- Dashing Buffalo
- Design-based learning
- Development Basketball League
- Devizes branch line
- Double (disambiguation)
- Double bottom line
- Down by Law (disambiguation)
- Dragon Ball Legends
- Drawing Black Lines
- Drexel Burnham Lambert
- Dunstan Baby Language
- Dutch Basketball League
- Dyirbal language
- Polish Basketball League