International Association of Geodesy
| Predecessor | European Arc Measurement (German: Europäische Gradmessung) | 
|---|---|
| Formation | 1886 | 
| Type | scholarly society | 
| Purpose | advancement of geodesy | 
| Headquarters | Masala, Kirkkonummi, Finland | 
| Region  | worldwide | 
| Parent organization | International Union of Geodesy and Geophysics | 
| Website | www | 
| Formerly called | International Geodetic Association | 
The International Association of Geodesy (IAG) is a constituent association of the International Union of Geodesy and Geophysics focusing on the science which measures and describes the Earth's shape, its rotation and gravity field.