Finnish Security Intelligence Service

Finnish Security Intelligence Service is the official English language title of the Protection Police (Finnish: Suojelupoliisi abbreviated Supo, Swedish: Skyddspolisen). The service formerly used the English title "Finnish Security Police". It is the intelligence agency of Finland in charge of national security. The agency's staff is composed of 220 policemen with additional training. It specialises in preventing security threats and participates in protecting the parliamentary democracy as well as protecting the nation's security interests.

The English title Finnish Security Police, was changed on August 27, 2010, the agency changed its English name thereby removing the word police. This was done to mark the continuing change of the agency's mission away from the area of traditional police responsibilities, towards international security intelligence duties.

Supo was formed in 1949 to replace its predecessor, Valtiollinen poliisi ("State Police"). In the aftermath of World War II the leadership positions of Valpo had been filled by communists, and some of its activities were found erroneous and illegal by an investigation committee. Valpo's predecessor was Etsivä keskuspoliisi, which was very effective in counter-intelligence and infiltration of communist organisations. It was formed from the passport bureau of the General Staff in 1919.