'Archer' was a British operation by the Special Operations Executive to organise a local intelligence service, reconnoitre possible sabotage targets, recruit and train local groups, and establish radio contact in German-occupied Norway (13 December 1941 onward).

A four-man Norwegian party (I. Fosseide, B. Mathiesen, Lynghaul and R. Aarkvisla) was delivered by sea. In the shorter term this operation was linked with 'Anklet', and in the longer term it was the first of a series of operations sent into Nordland to establish a resistance organisation. The group did not establish radio contact, however, and was generally rendered ineffective by internal conflict between its members.