title: AC1
text: # AC1
  
  AC1 may refer to:
  
  * AC1, a ranking grading within the Royal Air Force between 1919 and 1964
  * AC1, a candidate phylum of bacteria
  * $AC^1,$ a complexity class in circuit complexity
  * AC1 Sentinel, an Australian cruiser tank
  * AC-1, an IEC Utilization Category
  * Action Comics #1, containing the first appearances of several superheroes
  * Atlantic Crossing 1, an optical submarine telecommunications cable system
  * Assassin's Creed, the first game in the Assassin's Creed series
  