- Magnolia Gardens
- Magnolia House
- Magnolia Manor
- Magnolia Mortgage
- Magnolia Place
- Magnolia's
- Magnum Construction
- Magnum Insurance
- Magoo's
- Magsplus
- Maharam
- Maid Brigade
- Maid in America
- Maid To Clean
- Maid To Perfection
- Maidenform
- Maidenform Outlet
- Maidpro
- Maid-Rite
- Maids To Order
- Mail & More
- Mail Box
- Mail Box Plus
- Mail Boxes
- Mail Boxes Etc
- Mail Boxes Etc - Atlanta
- Mail Boxes Etc - Phoenix
- Mail Center
- Mail Depot
- Mail Express
- Mail 'n More
- Mail Station
- Mail Stop
- Mailbox Express
- Mailsouth
- Mail-Well Envelope
- Maimonides Medical Center
- Main Attractions
- Main Auto Parts