IAU (disambiguation)
The IAU abbreviation stands for:
- International Astronomical Union ( since 1919)
- International Association of Universities ( since 1950 ), a UNESCO affiliated education network
- International Association of Ultra Runners ( since 1984), the International Ultramarathon -Vereinigung
- International Union crossbowmen, English International Crossbow -shooting Union ( since 1956 )
- Iaura, an airport located in the Central Province in Papua New Guinea after the IATA airport code
- Disambiguation
- Abbreviation