M
- Manhattan Consumers Brewing Co. - NY 476
- Metz Brewing Co. - NE 35
- Metz Bros. Brewing Co. - NE 35
- Jacob Metzger & Co. - IN BW
- Milwaukee Brewing Co. of San Fran. - CA 295
- Harry Mitchell Brewing Co. TX 28
- Monumental Brewing Co. - MD 72
- Moore & Quinn, Inc. - NY 667
- Mueller Bros. Brewing Co. - WI 498
- Muskegon Brewing Co. - MI 224
