- AHA stands for Alcohol Health Alliance (UK)
- AHA stands for American Heart Association
- AHA stands for ASEAN (Association of Southeast Asian Nations) Humanitarian Assistance
- AHA stands for Alpha Hydroxy Acid
- AHA stands for American Hospital Association
- AHA stands for American Historical Association
- AHA stands for Athletes Helping Athletes (various locations)
- AHA stands for American Homebrewers Association
- AHA stands for Ayaan Hirsi Ali (foundation; New York)
- AHA stands for Academy of the Holy Angels
- AHA stands for Architecture and History of Art (UK)
- AHA stands for Arabian Horse Association (Aurora, Colorado)
- AHA stands for Adult Hockey Association (various locations)
- AHA stands for American Humanist Association
- AHA stands for American Humane Association
- AHA stands for Australian Hotels Association (Australia; est. 1839)
- AHA stands for Advocates for Health in Action (North Carolina)
- AHA stands for Artists Helping Artists
- AHA stands for American Health Association
- AHA stands for American Hippotherapy Association
- AHA stands for Ancient History and Archaeology (various locations)
- AHA stands for American Heritage Academy (various locations)
- AHA stands for Acetohydroxamic Acid (chemistry)
- AHA stands for American Hereford Association
- AHA stands for At Home America (home decorating accessories)
- AHA stands for American Hardboard Association (Palatine, Illinois)
- AHA stands for Animal Health Act (UK)
- AHA stands for Antihyperglycemic Agent
- AHA stands for American Homeowners Association
- AHA stands for Australian Healthcare Association
- AHA stands for African Humanitarian Action
- AHA stands for Anesthesia History Association
- AHA stands for American Homeschool Association
- AHA stands for Ammunition Holding Area
- AHA stands for After Hours Activities (various organizations)
- AHA stands for American Hyperlexia Association
- AHA stands for Activity Hazard Analysis
- AHA stands for Alert Holding Area (Army definition)
- AHA stands for Association of HIVAIDS (Haiti)
- AHA stands for American Hypnosis Association
- AHA stands for Airport Handling Agents
- AHA stands for Admins Helping Admins (gaming leagues)
- AHA stands for Altoona Housing Authority (Altoona, PA)
- AHA stands for Aerial Head Assembly (combat)
- AHA stands for Area Hazard Analysis
- AHA stands for Air Alpha Greenland (ICAO code)
- AHA stands for Anger Hostility Aggression
- AHA stands for American Hardwood Association
- AHA stands for Arrived Holding Area
- AHA stands for American Helicopter Association
- AHA stands for Animal Health Auxiliary
- AHA stands for Albert Hydeman Associates
- AHA stands for Alberta Handgun Association
- AHA stands for Analog Headend Assembly
- AHA stands for Assembly Hazard Analysis
- AHA stands for Automated Historical Archives
- AHA stands for Alexander Hancock Associates (Davidson, NC)
- AHA stands for Algorithmes Hybrides et Adaptatifs (French: Adaptive and Hybrid Algorithms)
- AHA stands for Avon Health Authority (UK)
- AHA stands for Assessment of Human Agency (Penn State University)
AHA