LDH

LDH is an acronym which may refer to:

• Lactate dehydrogenase, an enzyme
• Large-diameter hose, a fire hose
• Layered double hydroxides, a material
• The Letters Digits Hyphen rule of the Internet Domain Name System standards

• LDH (company), a Japanese talent management firm
• Lai Đại Hàn, mixed-race children of the Vietnam War
• Lord Howe Island Airport, Australia (IATA:LDH)
• Human Rights League (France) (French: Ligue des droits de l'homme)