ALD or Ald may refer to: Medicine, science and technology Adrenoleukodystrophy, a disease linked to the X chromosome Alcoholic liver disease Aldolase or ALD, an enzyme occurring naturally in animals Assistive listening device used to improve hearing ability Atomic layer deposition, a thin-film deposition technique Asymmetric Laplace distribution, in probability theory and statistics Places Alderley Edge railway station, Cheshire, UK (National Rail code ALD) Alderney, a Channel Island, Chapman code Alderson station, West Virginia, US (Amtrak station code ALD) Allahabad Junction railway station, Uttar Pradesh, India (station code ALD) Alerta Airport, Peru (IATA code ALD) Politics Autonomy Liberty Democracy, a coalition of centre-left political parties in Aosta Valley, Italy Arakan League for Democracy, a political party active in Rakhine State, Myanmar (Burma) Other uses Ald (unit), an old Mongolian measure equal to the length between a man's outstretched arms ALD Automotive, a French fleet managing and operational car leasing company Alderman, a member of a municipal assembly or council Assistant lighting designer, in the theatre Oxford Advanced Learner's Dictionary ALD, the Liberty dollar (private currency) See also Aldehyde, an organic compound Aldehyde dehydrogenase (ALDH), a type of enzyme Aldolase, or Fructose-bisphosphate aldolase, an enzyme ALD-52, a chemical analogue of lysergic acid diethylamide (LSD) ALDE (disambiguation) Alde (disambiguation)