- Uhl's Brewery
- Union Bottling Works
- Union Brewing & Malting Co.
- Union Brewing Co. (Anaheim)
- Union Brewing Co. (Detroit)
- Union Brewing Co. (Peoria)
- Union Brewing Co., Ltd.
- Union Brewing Co. of Newark
- United Breweries Co.
- United Brewing Co. of Newark
- United States Brewing Co.
- United States Brewing Co. of Chicago
- United States B. Co., A. Hupfel's Son
- Upper Peninsula Brewing Co.
- Utica Brewing Co., Inc.
U
