AAC may refer to:
Aachen (German pronunciation: [ˈʔaːxn̩]) or Bad Aachen, traditionally known in English and French as Aix-la-Chapelle (French pronunciation: [ɛks.lɑ.ʃɑ.pɛl]), is a spa and border city in North Rhine-Westphalia, Germany.
Aachen Cathedral (German: Aachener Dom), traditionally known in English as the Cathedral of Aix-la-Chapelle, is a Roman Catholic church in Aachen, western Germany, and the see of the Roman Catholic Diocese of Aachen.
The Australian Academy of Cinema and Television Arts Awards, known as the AACTA Awards, are presented annually by the Australian Academy of Cinema and Television Arts (AACTA).
AAC Middle Wallop is a British Army base near the Hampshire village of Middle Wallop. The base hosts 2 Regiment Army Air Corps and 7 Regiment AAC under the umbrella of the Army Aviation Centre.