- Mattress Warehouse
- Mattress World
- Mattress World Superstore
- Mattresses & More
- Matt's Barber Shop
- Maui Divers
- Maui Tan
- Maui Wowi
- Maurices
- Maurice's Gourmet Barbeque - Catering Department- Restaurant
- Mautz Paint Factory Store
- Maverick Country Store
- Maverick Country Stores
- Maverick Finance
- Mavis Discount Tire
- Mavis Tire
- Mawson & Mawson
- Max
- Max & Erma's
- Max & Erma's Restaurant
- Max & Erma's Restaurants
- Max 10
- Max Communications
- Max I Walker Cleaners & Launderers
- Max Muscle
- Max Muscle Raleigh
- Max Muscle Raleigh - North Ridge
- Max Orient
- Max Performance Supplements
- Max Studio
- Maxcare
- Maxim Crane Works
- Maxim Group
- Maxim Healthcare Services
- Maxim Staffing Solutions
- Maximum Fitness
- Maximum Mortgage
- Maximum Security
- Maxine's