'Derby' was a British operation by the Special Operations in Norway to create and disseminate 'black' propaganda directed at German servicemen (October 1943/May 1945).

In October 1943 two Free Norwegian servicemen, 2^nd Lieutenant Max Manus and Corporal Gregers Gram, who had been involved in 'Mardonius', were returned to Norway to undertake the propaganda mission designed to disaffect German servicemen, and also to make limpet mine attacks on German ships. Using a small printing press and ink delivered from neutral Sweden, the two men began to print and secretly distribute an underground newspaper, Im Western etwas Neues (something new in the west).

Neither man was fluent in German, and their publication was therefore riddled with grammatical and spelling errors, and from March 1944 was revised to use text delivered from London via Sweden. The undertaking soon involved 400 persons in the Oslo, Drammen and other nearby areas, and was proceeding well until November of the same year. Another agent, Johan Tallaksen, made contact with two supposed Luftwaffe deserters and, despite their misgivings, Gram agreed to meet the Germans. The men walked into an ambush in which Gram was killed instantly and Talliksen was wounded an captured, committing suicide a month later after a failed attempt to escape from German custody.

It was later learned that the two Germans were in fact real deserters, but had been caught and interrogated before being executed. The 'Derby' mission was partially compromised, and several of its personnel was arrested in the following weeks, but the mission nonetheless continued its propaganda task to the end of the war.