AHC
- 7400-series integrated circuits
- Aboriginal Housing Company
- Active heave compensation
- Alabama Historical Commission
- Allan Hancock College
- Alternating hemiplegia of childhood
- Amedee Army Airfield
- American Head Charge
- American Heroes Channel
- American Horse Council
- Angkor Hospital for Children
- Apical hypertrophic cardiomyopathy
- Arab Higher Committee
- Army Hospital Corps
- Austin History Center
- Australian Heritage Commission
- Auto Pilen
- Order of the Holy Cross