- ACH stands for Automated Clearing House
- ACH stands for Alcohol
- ACH stands for Arkansas Children’s Hospital (Little Rock, AR)
- ACH stands for Air Changes per Hour (ventilation)
- ACH stands for Acetylcholine
- ACH stands for Association for Computers and the Humanities
- ACH stands for Adult Care Home
- ACH stands for Anything Can Happen (various meanings)
- ACH stands for Analysis of Competing Hypotheses (intelligence analysis)
- ACH stands for Achondroplasia
- ACH stands for All Children’s Hospital (St. Petersburg, FL)
- ACH stands for Authentic Custom Homes
- ACH stands for Auckland City Hospital (New Zealand)
- ACH stands for Aluminium Chlorohydrate (salts)
- ACH stands for Automotive Components Holdings (various locations)
- ACH stands for Advanced Combat Helmet
- ACH stands for Acute Care Hospital (various locations)
- ACH stands for Access Channel
- ACH stands for Academic Credit Hours
- ACH stands for Allen County Hospital (Iola, KS)
- ACH stands for Army Community Hospital
- ACH stands for Aircraft Hangar (USAF bare base deployable aircraft shelter)
- ACH stands for Angeles Crest Highway (California SR2)
- ACH stands for Association of Children’s Hospices (UK)
- ACH stands for Area Combined Headquarters
- ACH stands for Armada de Chile (Spanish: Chilean Navy)
- ACH stands for A Concentrated High (coagulant)
- ACH stands for Adrenal Cortical Hormone
- ACH stands for Alice Cook House (Cornell University; New York)
- ACH stands for American College of Heraldry
- ACH stands for Automated Charge
- ACH stands for Attempts per Circuit per Hour
- ACH stands for Association Coopération Humanitaire (French: Humanitarian Cooperation Association; est. 1992)
- ACH stands for Agent Charge (freight forwarding)
- ACH stands for American Clearinghouse
- ACH stands for Above Counter Height (construction blueprints)
- ACH stands for Assault Craft Helmet (Gentex)
- ACH stands for Antenna Selection Reference Signal Channel
- ACH stands for Adler-Coppersmith-Hasner (algorithm)
- ACH stands for ACCS Common Hardware
- ACH stands for Average Call Handle (time; call center metric)
- ACH stands for Alpha-Cellulose Hydrolysis
ACH