407th

407th may refer to:


 * 407th Air Expeditionary Group, provisional United States Air Force unit assigned to the United States Air Forces Central 321st Air Expeditionary Wing
 * 407th Air Refueling Squadron, inactive United States Air Force unit
 * 407th Brigade Support Battalion, support battalion of the United States Army
 * 407th Military Hospital (Ukraine), military hospital of the Ukrainian Armed Forces in Chernihiv
 * 407th Support Brigade (United States), support brigade of the United States Army