IAH

IAH may refer to:

George Bush Intercontinental Airport (IATA code), an airport in Houston, Texas, United States
Iah, a god of the moon in ancient Egyptian religion
Iah (queen), a king's mother of ancient Egypt during the 11th dynasty
International Association of Hydrogeologists, a scientific and educational organisation
Workers International Relief, a Berlin-based organisation whose name in German is Internationale Arbeiter-Hilfe

See also