FIAS can refer to:
Fédération Indochinoise des Associations du Scoutisme Federazione Italiana Attività Subacquee Fellow of the Islamic World Academy of Sciences (IAS) Frankfurt Institute for Advanced Studies Fédération Internationale Amateur de Sambo Frederick Irwin Anglican School Foreign Investment Advisory Service, a multi-donor service of the International Finance Corporation (IFC), a member of the World Bank Group. Farnborough International Airshow