AC1

AC1 may refer to:

AC1, a ranking grading within the Royal Air Force between 1919 and 1964
AC1, a candidate phylum of bacteria
AC¹, 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

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