AAH
- Aaaah (film)
- Aachen Merzbrück Airfield
- Aah (film)
- Aah (god)
- Abu’ Arapesh language
- Action Against Hunger
- Adopt-a-Highway
- Advanced Attack Helicopter
- Aloha Airlines
- Aquatic ape hypothesis
- Arlington Academy of Hope
- Asa'ib Ahl al-Haq
- Association of Ancient Historians
- Association of Art Historians
- Atypical adenomatous hyperplasia
- Australian Academy of the Humanities
- Council for Secular Humanism
- Huron High School (Ann Arbor, Michigan)