IAS
IAS stands for:
- Iași Airport , Romania (IATA code)
- Indian Administrative Service
- Indicated Air Speed , indicated airspeed
- Individual anaerobic threshold (also IAnS), see Anaerobic threshold # Individual anaerobic threshold
- Interactive Application System , an operating system for PDP-11 computers from Digital Equipment Corporation
- Internal Audit Service , Internal Audit Service of the European Commission
- International Accounting Standards , set of rules for accounting
- International Association of Sedimentologists
- International amateur observatory in Namibia, Africa
- International reply coupon, a voucher for reply letters
- Institute for African Studies at the University of Bayreuth
- Institute for Advanced Study , a basic research institute at Princeton
- Instituto Ayrton Senna , non-profit foundation in Brazil
- International Allelopathy Society , international scientific society
ias stands for
- ias Foundation (originally the Institute for Occupational and Social Hygiene Foundation ), umbrella of the ias group
