Politics and Business magazines
- Rockwell Medical Technologies, Inc.
- Rocky Mountain Chocolate Factory, Inc.
- Rocky Shoes & Boots, Inc.
- Rodale Press, Inc.
- Rodale, Inc.
- Rodamco N.V.
- Rodriguez Group S.A.
- Rofin-Sinar Technologies Inc.
- Rogers Communications Inc.
- Rohde & Schwarz GmbH & Co. KG
- Röhm and Haas
- ROHN Industries, Inc.
- Rohr Incorporated
- Roland Berger & Partner GmbH
- Roland Corporation
- Roland Murten A.G.
- Roll International Corporation
- Rollins, Inc.
- Rolls-Royce Allison
- Rolls-Royce Group PLC