ALD

• 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

• 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)

• 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)

• Aimé Leon Dore, American fashion brand
• ALD Automotive, a French fleet managing and operational car leasing company

• Ald (unit), an old Mongolian measure equal to the length between a man's outstretched arms
• 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)

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• 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)

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