- R. U. Delapenha & Co., Inc.1
- Rath's Black Hawk1
- Rawleigh1
- Remington Arms Company1
- Republic Metalware Company1
- Reynolds Metals Company1
- Richard Hellmann, Inc.1
- Royal Baking Powder Co.1
- Royal Baking Powder Co., New York1
- Royal Baking Powder, New York1
- Royal Baking Powder, Standard Brands Inc1
- Royal Baking Powder, Standare Brands Inc.1
- Rumford Chemical Works, Providence, Rhode Island1
- Rumford Company, Rumford, Rhode Island1
- Schmidt's1
- Sears Roebuck and Co.1
- Servel1
- Shefford1
- Shull's Bakery, Marysville, Pennsylvania1
- Silver-Seal Century Metalcraft Corporation1