DHI may refer to: Dhi (Hindu thought), a concept DHI (company), a water environment research, consulting and software organisation from Denmark DHI Group, Inc, owner of employment websites Deutsches Historisches Institut, the German Historical Institutes present in several international cities (IATA airport code), Dhangarhi, Nepal Diffuse horizontal irradiance Dignitatis Humanae Institute, a Catholic-inspired NGO based in Rome Dhimal language (ISO 639-3 language code), a Sino-Tibetan language of Nepal EMD DHI, an experimental diesel-hydraulic railroad locomotive 5,6-dihydroxyindole, a chemical compound constituent of melanin

See also Dhee (disambiguation)