NH
- nH – (s) Nanohenry
- NH – (s) New Hampshire (postal symbol) – New Hebrides (ISO 3166 digram; obsolete 1980) – Vanuatu (FIPS 10-4 country code; from New Hebrides)
- NHANES – (i) National Health and Nutrition Examination Survey
- NHB – (s) New Hebrides (ISO 3166 trigram; obsolete 1980)
- NHB – (i) No Holds Barred radio (Link)
- NHL – (i) National Hockey League
- NHO – (i) Næringslivets Hovedorganisasjon (Confederation of Norwegian Enterprises, a Norwegian employers' organisation)
- NHRA – (i) National Hot Rod Association
- NHS – (i) National Health Service (UK)
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