AIH

AIH or AiH is an initialism that may refer to:

Codes

 * Air Incheon (ICAO airline designator AIH)
 * Ai-Cham language, ISO 639-3 code

Medicine

 * American Institute of Homeopathy (AIH), established in 1844, is the oldest extant national physician's organization in the United States
 * Autoimmune hepatitis, a human disease

Others

 * American IronHorse, an American motorcycle manufacturer


 * As It Happens, a Canadian radio news program broadcast on CBC Radio One