KHD (disambiguation)

KHD may refer to:
 * KHD Humboldt Wedag, an engineering company that supplies machinery, parts, and services
 * khd, the ISO 639-3 code for Ngkolmpu Kanum language
 * Khorramabad Airport, the IATA code KHD
 * Klöckner Humboldt Deutz AG, a German internal combustion engine manufacturer
 * Kärntner Heimatdienst, a German nationalist advocacy group