'Lancing' was a British unrealised special forces plan for the simultaneous launch of two series of attacks to destroy German radar installations and so open a gap in the line of radar coverage used by the Germans to detect incoming bombing raids (summer 1942).

The object of this exercise, to have been undertaken in the 'Busybody', 'Dearborn', 'Earthquake', 'Roughshod' and 'Turnscrew' sub-operations between Boulogne and Le Touquet on the north coast of German-occupied France, was to provide undetected access to the European mainland for a sizeable bomber force.