The 155th (South Scottish) Brigade was an infantry brigade of the British Army that saw active service in both the First and the Second World Wars. Assigned to the 52nd (Lowland) Division, the brigade saw active service in the Middle East and on the Western Front during the First World War. During the Second World War, now the 155th Infantry Brigade, it continued to serve with the 52nd Division in Operation Dynamo, and later in North-western Europe from late 1944 until May 1945.