| Acronym | Sense | Language | Topics |
|---|---|---|---|
| IAS | Institute of Asian Studies | In English | → Area studies |
| IAS | International and Area Studies | In English | → Area studies |
| IAS | International Association of Sufism | In English | → Associations → Islam |
| IAS | Islamic Academy of Sciences | In English | → Academies → Islam → Mathematics and natural sciences |
| IAS | Institut für Angewandte Systemtechnik | In German | |
| IAS | Identifizierung, Authentifizierung, Signierung | In German | → Telecommunications |
| IAS | Interface d'Authentification Serveur | In French | → Networks, communication → Telecommunications |
| IAS | Identification, Authentification et Signature | In French | → Computer science → Telecommunications |
| IAS | Indian Academy of Science (www.ias.ac.in) | In English | → Serial publications, periodicals → Academies → Mathematics and natural sciences → India |
| IAS | Impact Assessment Sheet | In English | → Management |
| IAS | Indicated Airspeed | In English | |
| IAS | Institute of Aeronautical Sciences | In English | → Aeronautics, aircraft |
| IAS | Integrated Avionics Subsystem | In English | → Aeronautics, aircraft |
| IAS | International Accounting Standards | In English | → Standardization → Accounting |
| IAS | Institute for Advanced Study (www.ias.edu) | In English | → Research institutes |