Politics and Business magazines
- Harbison-Walker Refractories Company
- Harbour Group Industries, Inc.
- Harcourt Brace and Co.
- Harcourt Brace Jovanovich, Inc.
- Harcourt General, Inc.
- Harding Lawson Associates Group, Inc.
- Hardinge Inc.
- HARIBO GmbH & Co. KG
- Harland and Wolff Holdings plc
- Harlem Globetrotters International, Inc.
- Harlequin Enterprises Limited
- Harley-Davidson Inc.
- Harleysville Group Inc.
- Harman International Industries Inc.
- Harmon Industries, Inc.
- Harmonic Inc.
- Harmony Gold Mining Company Limited
- Harold’s Stores, Inc.
- Harper Group Inc.
- HarperCollins Publishers