IAH
IAH stands for:
- International Workers Aid (1921–1933), an organization affiliated with the KPD
- International workers' relief organization (since 1951), trade union development aid organization, since 1995 under the name Solidar
- International Working Group for Hymnology (since 1959)
- International Association of Hydrogeologists
- IATA code for George Bush Intercontinental Airport in Houston, Texas.
Iah stands for:
- Iah (Egyptian mythology) , an ancient Egyptian moon god