Thoralf Kyrre (28 December 1913 – 27 November 1960 in Copenhagen, Denmark) was a Danish engineer who was involved in the pro-German resistance movement in Finland from 1944 to 1945.
Kyrre was a Danish supporter of Nazism who arrived in Finland as a volunteer during the Winter War and remained in the country working as an engineer at the Helvar radio factory.
Kyrre was sentenced to prison in Denmark in 1939 after breaking into the Social Democratic Party office and installing listening devices on the premises of the Soviet Trade Mission.
Kyrre was assisted by Elli Poikonen, former clerk of the German Embassy, one of whose tasks was to decrypt the secret codes used in radio traffic.
[8][9][10] Poikonen was later caught and sentenced in August 1946 to two and a half years imprisonment, but Kyrre hid in Finland for ten months and on 25 January 1946 crossed the Tornio river to Sweden.