AHS

• Abertay Historical Society
• Academy of Health Sciences
• Adelaide High School
• Adventist Health Studies
• African horse sickness
• Agoura High School
• Aitkin High School
• Albemarle High School (Virginia)
• Alberta Health Services
• Alice High School
• Alien hand syndrome
• Allen High School (disambiguation)
• Alternative High School (Calgary)
• American Headache Society
• American Helicopter Society
• American Hiking Society
• American Horror Story
• American Horticultural Society
• American Housing Survey
• Ames High School
• Amesbury High School
• Ancaster High School
• Andrean High School
• Annandale High School
• Antiquarian Horological Society
• Arizona Historical Society
• Ashland High School (disambiguation)
• Ashurst (Kent) railway station
• Austin High School (disambiguation)
• Australian Hospital Ship
• Automated highway system
• Aylesbury High School
• National Federation of Atheist, Humanist and Secular Student Societies