51st Division

In military terms, 51st Division or 51st Infantry Division may refer to:


 * Infantry divisions
 * 51st Division (1st Formation)(People's Republic of China), 1949–1952
 * 51st Reserve Division (German Empire)
 * 51st Infantry Division Siena (Kingdom of Italy)
 * 51st Division (Imperial Japanese Army)
 * 51st Division (Philippines)
 * 51st Guards Rifle Division
 * 51st Rifle Division (Soviet Union)
 * 51st (Highland) Division (United Kingdom)
 * 51st Infantry Division (United States)