Brands
- Muntain's, Milwaukee
- Muscogee
- Musi
- Myrna
- Mysterie
- Nan Flowers
- Nannette
- Nannette Chapeau
- Nannette Original
- Narobia
- Nassau Fashion
- Nat Tuman
- National Lady
- Needlepoint by Everitt
- Nell New York
- Nell's Hats
- Nellie Mean
- Nelly De Grab
- Nelson Caine
- Nettie Original
- New York Creation
- Newform
- Nicholas Ungar
- Nita Hats, Dallas