- Drinking water fountain
- Demolition contractor
- Dentist
- Dynamometer supplier
- Design agency
- Disabled sports center
- Debris removal service
- Drilling contractor
- Direct mail advertising
- Database management company
- Dry wall contractor
- Decal supplier
- Driver and vehicle licensing agency
- Drafting service
- Desktop publishing service
- Dance company
- Dermatologist
- Driving school
- Diesel engine dealer
- Dry wall supply store