GDH

GDH may refer to:


 * Gajirrabeng dialect, native to Australia
 * GDH 559, a Thai film production company
 * Glutamate dehydrogenase
 * Gonzo (company), previously GDH K.K., a Japanese anime studio
 * Gordon Hill railway station, in London
 * Gosford Hospital
 * Grand Ducal Highness
 * Gross Domestic Happiness
 * Guangdong Holdings, a Chinese holding company