| AHS | Aboriginal Health Services 
| Others |
| AHS | Absolute Handling System
| Others |
| AHS | Absolute Honesty In Service
| Others |
| AHS | Academic High School
| Others |
| AHS | Academy of Health Sciences
| Others |
| AHS | Accelerated High School
| Others |
| AHS | Acquired Hyperostosis Syndrome
| Others |
| AHS | Action on Health & Smoking
| Others |
| AHS | Active Handling System
| Others |
| AHS | Active High-Beam System
| Others |
| AHS | acute HIV syndrome
| Others |
| AHS | Adaptive High-Beam System
| Others |
| AHS | Addison High School
| Others |
| AHS | Additional Header Segment
| Others |
| AHS | Adjustable Handlebar System
| Others |
| AHS | Administrative Hearings Section
| Others |
| AHS | Adobe Halftone Screens
| Others |
| AHS | Adult High School
| Others |
| AHS | Advanced Cruise Assist Highway System
| Others |
| AHS | Advanced Habbo Security
| Others |
| AHS | Advanced Hair Solutions
| Others |
| AHS | Advanced Hardware Supplement
| Others |
| AHS | Advanced Hardware Support
| Others |
| AHS | Advanced High Strength Steel
| Others |
| AHS | Advanced Hybrid System
| Others |
| AHS | Advanced Hyper Streaming
| Others |
| AHS | Adventist Health Study
| Others |
| AHS | Adventist Health System
| Others |
| AHS | Agency of Human Services
| Others |
| AHS | Agricultural Health Study
| Others |
| AHS | Agricultural High School
| Others |
| AHS | Ahuas, Honduras
| Others |
| AHS | Alameda Health System
| Others |
| AHS | Alameda High School
| Others |
| AHS | Albany High School
| Others |
| AHS | Albemarle High School
| Others |
| AHS | Alberta Health Services
| Others |
| AHS | Alberta Health Services (Canada)
| Others |
| AHS | Alcohol Sensor
| Others |
| AHS | Alhambra High School
| Others |
| AHS | Aligned Hierarchy Seeker
| Others |
| AHS | Aligned Hub Seeker
| Others |
| AHS | All Hail Super
| Others |
| AHS | Alpers-Huttenlocher syndrome
| Others |
| AHS | Alpha Haemolytic Streptococci
| Others |
| AHS | Alternative Hedonistic Source
| Others |
| AHS | Alveolar Hypoventilation Syndrome
| Others |
| AHS | Always Happy Sisters
| Others |
| AHS | Always Has School
| Others |
| AHS | Ambulance Heritage Society
| Others |
| AHS | Ambulance Historical Society
| Others |
| AHS | American Hanoverian Society
| Others |
| AHS | American Harp Society
| Others |
| AHS | American Headache
| Others |
| AHS | American Headache Society
| Others |
| AHS | American Heartworm Society
| Others |
| AHS | American Hebephilia Society
| Others |
| AHS | American Helicopter Society
| Others |
| AHS | American Hemerocallis Society
| Others |
| AHS | American Hemerocallis Society's
| Others |
| AHS | American Hernia Society
| Others |
| AHS | American High School
| Others |
| AHS | American HIking Society
| Others |
| AHS | American Hiking Society's
| Others |
| AHS | American Home Series
| Others |
| AHS | American Home Shield
| Others |
| AHS | American Horror Satanism
| Others |
| AHS | American Horror Story
| Others |
| AHS | American Horticultural Society
| Others |
| AHS | American Hospital Society
| Others |
| AHS | American Hosta Society
| Others |
| AHS | American Housing Survey
| Others |
| AHS | AMN Healthcare Services
| Others |
| AHS | Amsterdam High School
| Others |
| AHS | Anacortes High School
| Others |
| AHS | Ancestral Health Society
| Others |
| AHS | Ancestral Health Symposium
| Others |
| AHS | Anglican High School
| Others |
| AHS | Animal Humane Society
| Others |
| AHS | Anticonvulsant Hypersensitivity Syndrome
| Others |
| AHS | Antiquated Hashing Standard
| Others |
| AHS | Antlers High School
| Others |
| AHS | Applied Health Science
| Others |
| AHS | Applied Health Sciences
| Others |
| AHS | Arab Horse Society
| Others |
| AHS | Arapahoe High School
| Others |
| AHS | Arcadia High School
| Others |
| AHS | Arizona Humane Society
| Others |
| AHS | Arizona Hydrological Society
| Others |
| AHS | Arlington High School
| Others |
| AHS | Armstrong High School
| Others |
| AHS | Arroyo High School, El Monte, California
| Others |
| AHS | Ashland High School
| Others |
| AHS | Asian Health Services
| Others |
| AHS | Asian Human Services
| Others |
| AHS | Assault Hoseline System
| Others |
| AHS | Assistant House Surgeon
| Others |
| AHS | Association for Humanist Sociology
| Others |
| AHS | Atascadero High School
| Others |
| AHS | Athens High School
| Others |
| AHS | Atherton High School
| Others |
| AHS | Atholton High School
| Others |
| AHS | Atlanta Humane Society
| Others |
| AHS | Atwater High School
| Others |
| AHS | Austin Healey Sprite
| Others |
| AHS | Austin Humane Society
| Others |
| AHs | Authentication Headers
| Others |
| AHS | Auto Hobby Shop
| Others |
| AHS | Autohaus Sudhannover
| Others |
| AHS | Autoliv Hirotako Safety
| Others |
| AHS | Automated Haulage Systems
| Others |
| AHS | Automated Health Systems
| Others |
| AHS | Automated Highway System
| Others |
| AHS | Automated Highway Systems
| Others |
| AHS | Automatic Heating System
| Others |
| AHS | Automotive High School
| Others |
| AHS | Autonomous Haulage System
| Others |
| AHS | Auxiliary Heater System
| Others |
| AHS | Average Highway Speed
| Others |
| AHS | Avon High School
| Others |
| AHS | Awesome Heavenly Scripture
| Others |
| AHS | Axle Housing
| Others |
| AHS | Ayumi Hamasaki Sekai
| Others |