Iah is a god of the moon in ancient Egyptian religion.
Iah or IAH may also refer to:
Iah (queen), a king's mother of ancient Egypt during the 11th dynasty George Bush Intercontinental Airport (IATA:IAH), an airport in Houston, Texas, United States International Association of Hydrogeologists, a scientific and educational organisation Workers International Relief, (German: Internationale Arbeiter-Hilfe), a Berlin-based organisation
See also Jah (disambiguation) Yah (disambiguation)