Products
- Reelcraft Pictures Corporation (Signed by R. C. Cropper)
- Reeves Broadcasting Corporation
- Reiter-Foster Oil Corporation
- Reliance Electric and Engineering Company
- Reliance Insurance Company
- Religious and Educational Motion Picture Society
- Remington Phonograph Company (Signed by Philo E. Remington)
- Reno Air
- Reno Air
- Rensselaer and Saratoga Rail Road Company
- Reo Motor Car Company
- Reo Motor Car Company (Signed by Ransom Olds)
- Reo Motors, Inc.
- Reo Motors, Inc.
- Reorganized Atlanta Mines Company (Goldfield, Nevada)
- Reorganized Carrie Silver-Lead Mines Corporation
- Reorganized Cracker Jack Mining Company
- Reorganized Cracker Jack Mining Company
- Republic Motor Truck Co., Inc.
- Republic Pictures Corporation
- Republic Steel Corporation
- Revere Racing Association, Inc.
- Rex Oil Company
- Rexall Drug and Chemical Company
- Rexall Drug, Inc.
- Rheingold Corp. (Beer)
- Rice Oil Company (Signed by Con Man George Graham Rice)
- Rice Oil Company (Stock Scam)
- Richfield Oil Company of California
- Richfield Oil Corporation
- Richfield Oil Corporation
- Richland, New York (Syracuse Northern Railroad Company)
- Rickenbacker Motor Company
- Ridge Avenue Passenger Railway Company
- Ridge Avenue Passenger Railway Company
- Ridge Avenue Passenger Railway Company
- Ridgefield & New York Rail Road Company
- Ridgefield & New York Rail Road Company
- Ringler Sandwich Shops, Inc.
- Ringling Bros. - Barnum & Bailey Combined Shows, Inc.
- Rio Grande Junction Railway Company
- Rio Grande Southern Railroad Company
- Rio Grande Southern Railroad Company
- Rio Grande Southern Railroad Company (Signed by Otto Mears)
- Rio Grande Southern Railroad Company (Signed by Otto Mears)
- River of Gold Company
- Riverfront Railroad Company
- RJR Holdings Corp. (Reynolds Tobacco, Nabisco)
- RJR Holdings Group, Inc. (Nabisco)
- RJR Nabisco Holdings Group, Inc.
- RKO Pictures Corporation
- Roanoke Railroad and Lumber Company
- Roberts Petroleum Torpedo Company
- Robeson Preservo Products Company
- Robins Dry Dock and Repair Company (Brooklyn, New York)
- Robinson Airlines Corporation
- Rochester Community Baseball, Inc.
- Rochester Telephone Corporation
- Rock Island and Peoria Railway Company
- Rock Island and Peoria Railway Company
- Rock Island and Peoria Railway Company
- Rock Island, Arkansas and Louisiana Railroad Company
- Rock Island, Peoria & St. Louis Railway Company
- Rock Island, Stuttgart and Southern Railway Company
- Rockcastle Cement & Lime Company
- Rockwell Spring and Axle Company
- Rockwell-Standard Corporation
- Rockwood Hall, Inc. (Rockefeller Estate Development)
- Rocky Fork Coal Company of Montana
- Rogers Milk Products Company, Inc.
- Rogers-Brown Iron Company
- Rome, Watertown and Ogdensburg Rail Road Company
- Rome, Watertown and Ogdensburgh Rail Road Company
- Ronco Teleproducts, Inc. (Popeil Pocket Fisherman)
- Ronson Corporation (Cigarette Lighters)
- Roof Tree Printing & Publishing Company
- Roosevelt Raceway, Inc.
- Roosevelt Raceway, Inc.
- Rosemary Banking & Trust Company (Issued to Thomas Williams Mason Long)
- Round Mountain Mining Company
- Rowan Companies, Inc.
- Royal Bank of Canada
- Ruberoid Co.
- Rumford Falls and Rangeley Lakes Railroad Company
- Rustless Iron and Steel Corporation
- Rutland & Burlington Rail-Road Company
- Rutland & Washington Rail Road Company
- Rutland & Washington Rail Road Company (Signed by Erastus Corning)
- Rutland and Burlington Rail-Road Company (1848)
- Rutland Railroad Company
- Rutland Railroad Company
- Ryder System, Inc. (Truck Rentals)
- S. D. Warren Company
- S. S. Kresge Company (Kmart, Sears)
- S. S. Kresge Company (Kmart, Sears)
- S. W. Straus & Co. Incorporated
- Sacramento Northern Railroad
- Sacramento Northern Railroad
- Sacramento Valley Colony Company
- Sacramento, City of