'Ratweek' (ii) was a British operation organised by the Special Operations Executive to kill as many German intelligence and counter-intelligence agents as possible in Europe (January/February 1944).

The operation’s purpose was to create confusion and fear in the German intelligence services at the time the Allies were increasing their preparations for the contribution to be made by resistance forces to the 'Overlord' landings in Normandy. Nothing but the sketchiest details have ever been released, but it is known that 'Ratweek' (ii) achieved successes against Nazi personnel and collaborators in Norway, France (especially in the south-east), Denmark and the Netherlands, and that the operation was supervised by Edwin Hardy Amies, at the time head of the Special Operation Executive’s Belgian Section.