212th

212th may refer to:


 * 212th Battalion (American Legion), CEF, a unit in the Canadian Expeditionary Force during the First World War
 * 212th Coast Artillery (United States), a Coast artillery Regiment in the New York National Guard
 * 212th Fires Brigade (United States), an artillery brigade in the United States Army
 * 212th Infantry Division (Germany), raised in August 1939 and remained on garrison duty in Germany until March 1941
 * 212th Rescue Squadron, a unit of the Alaska Air National Guard