AHN stands for Archivo Histórico Nacional (Spanish: National Historical Archive)
AHN stands for Academy of the Holy Names (Albany, NY)
AHN stands for All Headline News (online news service)
AHN stands for Allied Health Network
AHN stands for Athens, GA, USA (Airport Code)
AHN stands for Autisme de Haut Niveau (French: High-Functioning Autism)
AHN stands for AIDS Housing Network (New York, NY)
AHN stands for Army Health Nurse (US Army)
AHN stands for Adenomatous Hyperplastic Nodule
AHN stands for Asian Highway Network (transportation project)