LDH is an acronym which may refer to: Science and technology 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
Other Uses LDH (company), a Japanese talent management firm Lai Đại Hàn, mixed-race children of the Vietnam War Lord Howe Island Airport, Australia (IATA:LDH) Louisiana Department of Health Human Rights League (France) ()