NHD

NHD may refer to:


 * National History Day, US
 * National Hydrography Dataset, US
 * Networked Help Desk
 * New Hacker's Dictionary, of computer slang
 * Noordhollands Dagblad, a Dutch newspaper
 * Al Minhad Air Base, United Arab Emirates, IATA code
 * Nunhead railway station, London, England, station code
 * nHD, a graphic-display resolution of 640x360 pixels
 * Ava Guarani language of Paraguay, Brazil, and Argentina, ISO 639-3 code