JCA may refer to:
Computing Java Cryptography Architecture Java EE Connector Architecture, for connecting application servers and enterprise information systems (EIS)
Military Joint capability areas, US Department of Defense listing of military capabilities Joint Cargo Aircraft, US Army and Air Force designation for the C-27 Spartan Joint Combat Aircraft, Royal Navy and RAF designation for the F-35 Joint Strike Fighter
Organizations Camp JCA Shalom, a sleep-away camp in Malibu, California Jain Center of America, a Jain temple in New York, United States Japan Cricket Association, the governing body for cricket in Japan Japan Chess Association, the governing body for chess in Japan Japanese Cancer Association, a cancer research association in Japan Jewish Colonisation Association, founded 1891 to facilitate emigration of Jews Joliet Catholic Academy, Illinois, US Josephite Community Aid, Australian charity founded in 1986
Publications Journal of Computational Acoustics Journal of Contemporary Antisemitism
Other uses Juvenile chronic arthritis Jean-Claude Ades, German electronic music producer Jackie Chan Adventures