'Ottrington' was the Allied plan to deceive the Germans as to their intentions as they prepared their 'Olive' (iii) offensive against the 'Gotisch-Linie' defences (summer 1944).

Designed to dovetail with 'Ferdinand' (iii), the plan was designed to suggest that the Allies were building up the strength of Lieutenant General Sir Oliver Leese’s British 8^th Army on the eastern side of Italy with a view to passing this extra strength through Generał dywizji Władysław Anders’s Polish II Corps on the coast of the Adriatic Sea, and were also creating an assault force in the area of Naples and Salerno for an amphibious assault somewhere in the gulf of Genoa in the north-western part of Italy. Using a large quantity of dummy radio traffic and more than 100 dummy tanks and other dummy vehicles in the planned eastern part of the assault, the plan was designed to persuade the Germans that these two assaults would take place simultaneously seven days after the 8^th Army’s actual assault on the 'Gotisch-Linie' defences.

The plan was soon replaced by 'Ulster' as the Allies' intentions in 'Olive' (iii) were modified.