- Desktop publishing service
- Dairy supplier
- Dairy store
- Delivery service
- Door manufacturer
- Door shop
- Dog day care center
- Dog park
- Dental supply store
- Display stand manufacturer
- Dermatologist
- Disability equipment supplier
- Desalination plant
- DVD store
- Dry wall contractor
- Do-it-yourself shop
- Deli
- Dental insurance agency
- Diesel engine repair service
- Dock builder