NHA
- 8895 Nha
- National Health Accounts
- National Health Action Party
- National Health Authority
- National Healthcareer Association
- National Heritage Academies
- National Highways Authority (disambiguation)
- National Hockey Association
- National Housing Act (Canada)
- National Housing Act of 1934
- National Housing Authority (Philippines)
- National Hydrogen Association
- Neuchâtel Hockey Academy
- Nha Trang Air Base
- Nursing home