5. Kolonne (lit. 'Fifth column') was an organization using violence and sabotage to oppose the occupation of Denmark by German forces during the Second World War. The organization was formed and based in Aarhus and with some 100 members it was one of the larger resistance groups in that area in the later years of the war. The group was created in response to the destruction of the resistance groups in Jutland by the Gestapo between late 1943 and the summer of 1944. The group functioned from June 1944 to the end of the occupation in May 1945.