- D & W Pharmacy
- D A Davidson &
- D B Mart
- D C Electric
- D C Enterprises
- D E Jones
- D J Construction
- D J Nails
- D L Evans Bank
- D P Associates
- D P Dough
- D R Horton Homes
- D W Construction
- D&B Supply
- Da Vinci Bridal
- Dacotah Bank
- Daddy's Junky Music Stores
- Dad's Place
- D'Agostino
- Dahl's Food Marts - Florists
- Dahl's Food Marts - Groceries
- Dahl's Food Marts - Pharmacies
- DAHN Center
- Daily Bread
- Daily Donuts
- Daily Express
- Daily Grind Coffee House
- Daily Grind Espresso
- Daily News
- Dairy Bar
- Dairy Barn
- Dairy Delight
- Dairy Farmers of America
- Dairy Freeze
- Dairy King
- Dairy Mart
- Dairy Queen
- Dairyland Power Cooperative
- Dakota Community Bank