'Byng' was a British unrealised plan, in concert with 'Rawlinson', for an operation to enlarge the lodgement of Lieutenant General J. T. Crocker’s I Corps of Lieutenant General Sir Miles Dempsey’s 2^nd Army on the eastern side of the Orne river in the south-eastern sector of the Allied 'Overlord' lodgement in Normandy (late July 1944).

The undertaking’s object was to have been the enlargement of the beach-head to allow use to be made of the port of Ouistreham and the canal linking this port with Caen, and at the same time to improve the lines of the lodgement’s eastern edge and so allow economise on the number of men required to hold it. The 'Byng' part of the plan called for the use of Major General E. H. Barker’s 49^th Division, which was just arriving in Normandy, in the area to the north of the Bois de Bavent.