Swedish Defence Research Agency

Swedish Defence Research Agency (Swedish: Totalförsvarets forskningsinstitut, FOI) is a government agency in Sweden for defence research that reports to the Ministry of Defence. It has its headquarters in Kista, and other locations in Grindsjön south of Stockholm, Linköping and Umeå. The activities of FOI include research, development of technology and analysis, primarily for military defence, but also for civil emergency, security and other civilian applications.

In 2011, FOI employed around 950 people.

FOI was created in 2001 by combining the Swedish National Defence Research Institute (FOA) with the National Aeronautical Research Institute (FFA).

FFA had been created in 1940 in Bromma, Stockholm as a governmental research institute for the Swedish aviation industry, large parts of which were devoted to military aircraft.

FOA had been created in 1945 from three existing organisations:

Soon after FOA was created in 1945, the organisation was tasked to investigate the novel invention of nuclear weapons for the Swedish armed forces. This included both protection activities, and investigations and preparations for a possible Swedish nuclear weapon program. In the 1950s and 1960s, this constituted a considerable part of FOA's activities. After Sweden signed the Nuclear Non-Proliferation Treaty in 1968, the remaining nuclear development activities were dismantled, and only protection research remained in the nuclear area.

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