66th Division

In military terms, 66th Division or 66th Infantry Division may refer to:


 * Infantry divisions :
 * 66th (2nd East Lancashire) Division, a unit of the British Army in the First World War
 * 66th Infantry Division (United Kingdom), a unit of the British Army in the Second World War
 * 66th Infantry Division (United States), a unit of the United States Army


 * Cavalry divisions :
 * 66th Cavalry Division (United States), a unit of the United States Army


 * Armoured divisions :
 * 66th Tank Division, Red Army