'''IFS''' may refer to: {{TOC right}}
==Companies== * Industrial and Financial Systems (IFS AB), a Swedish company and creator of enterprise software * International Film Service, a short-lived animation studio owned by Hearst Communication.
==Computer science== * Iterated function system, a method of constructing fractals in mathematics and computer science * Internal field separator, a special set of characters in Unix shells * Interference (intensity) fluctuation spectroscopy, related to dynamic light scattering * Interframe spacing, a pause which may be required between network packets or network frames * Installable File System, a filesystem API in IBM OS/2 and Microsoft Windows NT * InfoPath Forms Services, a component of SharePoint Server that allows Microsoft Office InfoPath forms to be hosted in a SharePoint web site and serve and fill them using a browser-based interface
==Geographical== * Irish Free State, a state in Ireland which existed in the early part of the 20th century * Ifs, Calvados, a commune of the ''département'' of Calvados, in the Normandie ''région'', in France
==Government== * Indian Foreign Service, Diplomatic Service of the Government of India * Indian Forest Service, All India Services of the Government of India
==Organisations== * ifs University College, a UK-based, non profit making body providing financial education * Institut für Sexualwissenschaft * Institute for Fiscal Studies, a UK-based independent economic research institute * Institutt for Forsvarsstudier, the Norwegian Institute for Defence Studies * Institut für Sozialforschung, the University of Frankfurt Institute for Social Research * International Foundation for Science * International French School Singapore<!--IFS from https://www.ifs.edu.sg/ --> * International Futures * International Sumo Federation * Internationale Filmschule Köln, a filmschool in Cologne, Germany * Islamic Foundation School
==Science== * Integral field spectroscopy, a technique for astronomical observations * Integrated Forecast System a global meteorological model developed by European Centre for Medium-Range Weather Forecasts * Isoflavonoid synthase, an enzyme
==Technology== * Independent Front Suspension, an early type of front-end independent suspension on many passenger vehicles * Initial Flight Screening, flight screening used as a prerequisite for Air Force Flight School *Intelligent Front-lighting System is a technology to ensure the visibility of the driver on the road ahead without blinding oncoming drivers with the partial light control capability.
==Other== * Internal Family Systems Model, a school of psychotherapy * International Financial Statistics, a database maintained by the International Monetary Fund * A retired US Navy hull classification symbol: Inshore fire support ship (IFS)
{{disambig}}