Brands
- Marlowe White
- Marquise New York Paris
- Marshall Field & Co.
- Martha Gene
- Martha Original
- Mary Barron
- Mary K
- Mary Lorene
- Maud Roser
- Maud Roser licensed copy
- Maudie's Millinery
- Max Mayer
- Max Sachs
- Maxine Hats
- Maya de Mexico
- Mazet
- McCall's
- McMullen
- Mela-Nee Hats
- Meyer Brothers
- Meyers Make
- MGM Elizabeth Taylor Original
- Michael Andrew
- Michelene