457th
# 457th

457th may refer to:

* 457th Air Expeditionary Group, provisional United States Air Force unit assigned to the Air Combat Command
* 457th Airlift Squadron (457 AS), part of the 375th Airlift Wing at Andrews Air Force Base, Maryland
* 457th Fighter Squadron, United States Air Force Reserve Command (AFRC) unit, assigned to the 301st Operations Group
