NNHS
| Acronym | Definition |
|---|---|
| NNHS | National Nursing Home Survey |
| NNHS | Newton North High School |
| NNHS | Naperville North High School (Illinois) |
| NNHS | Newport News High School |
| NNHS | National Nutrition and Health Survey (various locations) |
| NNHS | Northern Nevada Home Schools, Inc. (est. 1984) |