- Music Masters
- Music Place
- Music Plus
- Music Recyclery
- Music Room
- Music Shop
- Music Store
- Music Studio
- Music Unlimited
- Music World
- Musica Latina
- Musicland
- Mustang Sally's
- Mustard Seed
- Mutual Federal Savings Bank
- Mutual of America
- Mutual of New York
- Mutual of Omaha Companies
- Mutual Savings Bank
- Mutual Securities
- MV Transportation
- My Barber Shop
- My Brother's Place
- My Cleaners
- My Dentist
- My Dollar Store
- My Fair Lady
- My Father's House
- My Favorite Muffin
- My Favorite Muffin & Bagel Cafe
- My Favorite Place
- My Friend's Place
- My Gym
- My Gym Children's Fitness Center
- My Mechanic
- My Nails
- My Salon
- My Secret Garden
- My Sister's Closet