AC6

AC6 or AC-6 may refer to:
 * Aviastroitel AC-6, a glider
 * USS Mars (AC-6), a US Navy refueling ship
 * Southern Pacific class AC-6, steam locomotives
 * AC-6, a utilization category in electrical engineering, defined by the International Electrotechnical Commission
 * Ace Combat 6: Fires of Liberation, a 2007 video game
 * Armored Core VI: Fires of Rubicon, a 2023 video game