CYA may stand for: California Youth Authority, now California Division of Juvenile Justice Canadian Yachting Association, now Sail Canada College Year in Athens, an U.S. study abroad program Cover your ass, a defensive practice against legal penalties or criticism Cyanuric acid, a chemical compound ya, meaning "radiocarbon years ago" in calibration of radiocarbon dates CYA, the IATA code for Antoine-Simon Airport, Haiti See also See You (disambiguation) (including "seeya")