- DSS
- Dunkin' Donuts
- Duron Inc-Regional
- Duron Paints & Wallcoverings
- Duty's Lock & Key
- Duty's Lock Safe & Security
- Dye-It Rite
- Dynamics Development
- E & Eit CONSULTING Svc Inc
- E M Design Group
- E Pennsboro School Age Program
- E Plus Technology Inc
- Earhart's Flooring Bathroom
- Earl S Moyer MD
- Earthstone Pet Collars