| Acronym | Definition |
|---|
| NDHA➣National Digital Heritage Archive (New Zealand) |
| NDHA➣North Dakota Healthcare Association (Bismarck, ND) |
| NDHA➣Nevada Dental Hygienists' Association |
| NDHA➣National Dental Hygienists' Association |
| NDHA➣Nebraska Dental Hygienists' Association |
| NDHA➣National District Heating Association (now International District Energy Association) |
| NDHA➣New Downland Housing Association (Reading, Berkshire, England, UK) |