JSA may refer to:
- Jaisalmer Airport (IATA Code)
- Japan Shogi Association
- Japan Sumo Association
- Japanese School of Amsterdam
- Japanese Standards Association
- JavaScript for Automaton, a scripting language for macOS
- Jetstar Asia Airways (ICAO Code)
- Job Safety Analysis
- Job Services Australia
- Jobseeker's Allowance in the United Kingdom
- Joint sales agreement
- Joint Security Area a place between South and North Korea where the two country forces stand face-to-face.
- Joint Security Area (film), a 2000 South Korean film
- Joseph Smith Academy, a campus of Brigham Young University once located in Nauvoo, Illinois
- Junior State of America, a student run political debate organization
- Justice Society of America, a DC Comics superhero team
- JSA (comic book), a comic book title from DC Comics
- Jsa, a blood antigen
- Jefferson Science Associates, the non-profit managing and operating contractor of the Thomas Jefferson National Accelerator Facility
This disambiguation page lists articles associated with the title JSA.
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