439th

439th may refer to:

439th (Tyne) Light Air Defence Regiment, Royal Artillery, a Volunteer unit of the British Army 439th Airlift Wing, an active United States Air Force Reserve unit 439th Bombardment Squadron, a B-26 Marauder medium bombardment unit 439th Operations Group, an active United States Air Force Reserve unit

See also 439 (number) 439, the year 439 (CDXXXIX) of the Julian calendar 439 BC