- Harmarville Home Health Agency
- Harmony Home Care
- Harris Home Health
- Harris Poll
- Harris Williams & Co.
- Hart Research Associates
- Hartford Courant
- Hartford Hospital
- Harvard Business Review
- Harvard Business School
- Harvard Joint Center for Housing Studies
- Harvard Medical School
- Harvard Pilgrim Health Care
- Harvard University
- Hashtag One
- Havard Medical
- Haven Adulty Day Care Center
- Haven Home Health
- Havencrest Capital Management
- Hawaii Association of Healthcare