IAAS

IAAS can refer to the following:

Organisations

 * International Association for Astronomical Studies, a youth astronomy and aerospace research group based out of Denver, Colorado with a 40+ year history of success in the youth STEM fields.


 * Incorporated Association of Architects and Surveyors, former name of the British professional body Association of Building Engineers
 * International Association for Shell and Spatial Structures
 * Institute of Agriculture and Animal Science, institute of Tribhuvan University, Nepal
 * International Association of Students in Agricultural and Related Sciences, Belgium-based international organisation
 * International Association for Ambulatory Surgery, Belgium-based international organisation
 * Independent Academies Assured Services

Other

 * Infrastructure as a service, a cloud computing service model
 * Indian Audits and Accounts Service, an Indian Civil Service