XAC may refer to:
the IATA code for Arcachon - La Teste-de-Buch Airport, France the ISO 639-3 code for the Kachari language Xinyang Agricultural College Xi'an Aircraft Industrial Corporation, also known as Xi'an Aircraft Company Limited XacBank, a bank in Mongolia Xbox Adaptive Controller, a video game controller designed by Microsoft for Windows PCs and the Xbox One and Xbox Series X/S video game consoles