- Duffield Elementary School
- Duffy's Mart
- Dunham's Sports
- Duraclean Specialists Inc
- Duron Paints & Wallcoverings
- DYH Business Brokers Inc
- Dymond Realty
- Dyncorp
- E E Mills & Son
- E M Banzhoff Painting & Paper
- E Ronald Shellenberger DDS
- E Z Choice Wireless
- E Z Choice Wireless
- Eagle Design Inc
- Ear Nose & Throat Consultants
- Earth & Turf Svc
- Earth Movers Inc
- Earth Tech Inc
