- Dance Companies, Somerville
- Data Communications Service, Equipment, Supplies & Sales, Somerville
- Data Processing Services, Somerville
- Data Recovery Services, Somerville - Hard Drive Data Recovery, etc
- Day Spas, Somerville
- Debt Adjusters, Somerville
- Decorating & Designing Services, Somerville
- Decorative Wood Products Manufacturers, Somerville
- Delicatessen Restaurants, Somerville
- Delivery & Errand Services, Somerville
- Delivery Dry Cleaning & Laundry, Somerville
- Denomination, Non-Denominational, Etcetera, Somerville
- Dental Bonding & Cosmetic Dentistry, Somerville - Cosmetic Dentist & Tooth Bonding
- Dental Hygienists, Somerville
- Dentists, Somerville
- Department Stores, Somerville
- Designer Clothes & Accessories, Somerville
- Designers, Somerville
- Desktop Publishing, Somerville
- Developmental Children Services, Somerville
- Developmental Disabilities, Somerville
|
- Developmentally Disabled Information & Services, Somerville
- Die Casting, Somerville
- Digital Printing & Imaging Service, Somerville
- Diner Restaurants, Somerville
- Direct Mail Advertising Services, Somerville
- Disabled Persons Assistive Services, Somerville
- Discount Stores, Somerville - Clothing, Grocery, Furniture, Etc
- Dispensing Machines, Somerville
- Displays & Display Installation Service, Somerville - Trade Show Displays
- Divers & Diving Professionals, Somerville
- Diving Instruction, Somerville
- Doctorate Degree, Somerville
- Doctors, Physicians & Surgeons, Somerville
- Donuts, Somerville
- Door & Gate Operating Devices, Somerville
- Drainage Contractors, Somerville - Install & Repair Drainage Systems
- Drinking Establishments, Somerville
- Drugs, Pharmaceutical Products & Toiletries - Wholesale & Manufacturers, Somerville
- Dry Cleaning & Laundry, Somerville - Dry Cleaners
- Drywall, Insulation & Plaster Contractors, Somerville - Installation & Repair Services
- Durable & Non Durable Goods & Products, Somerville
|
