NHO

NHO or nho may refer to:
 * Confederation of Norwegian Enterprise (Næringslivets Hovedorganisasjon, NHO), an employers organisation in Norway
 * National Hydrographic Office, headquarters of the Indian Naval Hydrographic Department
 * Natural hybrid orbitals, one of a set of natural localized orbital sets in quantum chemistry, see Natural bond orbital
 * Takuu language, a Polynesian language spoken in Papua New Guinea (iso 639-3: nho)
 * Nitroxyl, a chemical compound well known in the gas phase, with the formula NHO
 * N-Heterocyclic olefins, a neutral heterocyclic compound