Triple Nickel, Triple Nickels or Triple Nickles may refer to:

Military

  • 555th Engineer Brigade (United States), part of the U.S. Army's I Corps
  • 555 Field Artillery Battalion, part of the U.S. Army's 5th Infantry Regiment during the Korean War
  • 555th Fighter Squadron, part of the U.S. Air Force's 31st Fighter Wing
  • 555th Mobile Infantry Regiment, a fictional elite military unit in John Ringo's Legacy of the Aldenata book series
  • 555th Parachute Infantry Battalion (United States), aka "Triple Nickles", an all-black unit of the U.S. Army during World War II <!-- Apparently this is how they spelled it; see http://www.triplenickle.com/ !-->
  • 53-0555, a retired Lockheed EC-121 Warning Star aircraft on display at the National Museum of the United States Air Force

Other

  • 555 timer IC, an integrated circuit popular with hobbyists
  • Interstate 555, a highway in Arkansas, United States
  • Triple Nickel Books, published by Solomon Gelman
  • Triple Nickel lift at Bluewood Ski Area