325th may refer to:

325th Air Division, an inactive United States Air Force unit 325th Division (Vietnam), a division of the People's Army of Vietnam 325th Fighter-Interceptor Squadron, an inactive United States Air Force unit 325th Fighter Wing, a wing of the United States Air Force 325th Air Control Squadron, former part of the 325th Fighter Wing 325th Infantry Division (Wehrmacht), infantry division of the German Heer, formed in March 1945 as one of the Wehrmacht's final emergency formations of the war 325th Infantry Regiment (United States), a light infantry parachute insertion fighting force of the United States Army 325th Weapons Squadron, a United States Air Force unit assigned to the USAF Weapons School

See also 325 (number) 325, the year 325 (CCCXXV) of the Julian calendar