- Medical Specialists
- Medical Store
- Medical Systems
- Medical Weight Control
- Medical Weight Loss Clinic
- Medical Weight Loss Clinics
- Medical Weight Management
- Medicap Pharmacy
- Medicare
- Medicine Chest
- Medicine Shop
- Medicine Shoppe
- Medieval Times
- Medifast Weight Control Centers
- Medi-Home Care
- Mediq PRN Life Support Services
- Mediterranean Cafe
- Mediterranean Grill
- Medlab
- Medline Industries
- Med-Mart
- Medsource
- Medstaff
- Medtronic Sofamor Danek
- Meeting Place
- Mega Force Staffing Services
- Mega Motors
- Mega Tan
- Mega Video
- Megamerica Mortgage
- Meijer
- Meijer Pharmacy
- Meijer's
- Meineke
- Mejico Express
- Mel Foster
- Melaleuca
- Melange
- Mellon Financial Corporation