title: AC-4
text: # AC-4
  
  AC-4 or AC4 may refer to:
  
  ## Music
  
  * AC4 (band), a Swedish hardcore punk band, or their eponymous album
  
  ## Vehicles
  
  ### Aircraft
  
  * Light Wing AC4, an aircraft
  * Aviastroitel AC-4 Russia, glider
  * Comte AC-4, a two-seat Swiss monoplane
  
  ### Ships
  
  * USS Cyclops (AC-4), a US Navy collier ship
  
  ### Trains
  
  * Southern Pacific class AC-4, a class of steam locomotive
  
  ### Tanks
  
  * AC4 tank a World War Two Australian cruiser tank.
  
  ## Technology
  
  * AC-4, an IEC Utilization Category
  * Dolby AC-4, Dolby Digital audio codec
  
  ## Videogames
  
  * Ace Combat 04: Shattered Skies, a 2001 video game
  * Armored Core 4, a 2006 video game
  * Assassin's Creed IV: Black Flag, a 2013 video game
  