| Acronym | Definition |
|---|
| NNH➣Number Needed to Harm (medical) |
| NNH➣Norske Naturterapeuters Hovedorganisasjon (Norweigan: Norweigan Association of Natural Medicine) |
| NNH➣National Network for Health |
| NNH➣Nissan Network Holdings (Japan) |
| NNH➣Natal Native Horse (calvary unit) |
| NNH➣Northern Natural History |
| NNH➣Newbie Needs Help |