JSA
JSA is an abbreviation of:
- Japan Scientists' Association , Japanese scientific organization
- Justice Society of America , American comic book superhero group
- Japanese Standards Association , Japanese standards organization
- Joint Security Area , see United Nations Command Security Battalion - Joint Security Area
- Joint Security Area (film) , South Korean film
- Juvenile detention center
- Japanese Government Team for Safeguarding Angkor
- Jobseeker's Allowance , UK unemployment benefit
- Jaisalmer Airport , India (IATA code)
- Jetstar Asia Airways , airline from Singapore (ICAO code)
- Joint SIGINT Activity , joint technical reconnaissance by NSA and BND
