- Northern Reflections
- Northern Tool
- Northern Trust
- Northern Trust Bank
- Northfield Savings Bank - Branches
- Northgate Barber Shop
- Northland Area Federal Credit Union
- Northland Cable Television
- Northland Cable TV
- Northpark Dental Group
- Northridge Apartments
- Northrop Grumman Information Technology
- Northrop Grumman It
- Northside Animal Hospital
- Northside Apartments
- Northside Auto Sales
- Northside Barber Shop
- Northside Mini Storage
- Northside Realty
- Northside Self Storage
- Northside Veterinary Clinic
- Northstar Mortgage
- Northstar Services
- Northview Apartments
- Northwest Airlines
- Northwest Animal Hospital
- Northwest Athletic Club
- Northwest Auto Sales
- Northwest Chiropractic
- Northwest Community Action
- Northwest Disability Services
- Northwest Electric
- Northwest Indiana Concrete Cutting
- Northwest Insurance Agency
- Northwest Insurance Network
- Northwest Medical Center
- Northwest Michigan Human Service Agency
- Northwest Mortgage
- Northwest Mortgage Group