438th

438th may refer to:


 * 438th Air Expeditionary Advisory Group (438 AEAG), assigned to the 438th Air Expeditionary Wing of USAFCENT, stationed at Kabul Airport, Afghanistan
 * 438th Air Expeditionary Group, provisional unit assigned to United States Air Forces Central to activate or inactivate as needed
 * 438th Air Expeditionary Wing, an active United States Air Force unit operating in Afghanistan and assigned to United States Air Forces Central
 * 438th Bombardment Squadron or 180th Airlift Squadron, unit of the Missouri Air National Guard 139th Airlift Wing located at Rosecrans Air National Guard Base, Missouri
 * 438th Fighter-Interceptor Squadron, inactive United States Air Force unit