JSA may refer to:Jaisalmer Airport Japan Shogi Association Japan Sumo Association Japanese School of Amsterdam Japanese Standards Association JavaScript for Automaton, a scripting language for macOS Jetstar Asia 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 by Park Chan-wook Joseph Smith Academy, a campus of Brigham Young University once located in Nauvoo, Illinois Justice and Spirituality Association, or Al Adl Wa Al Ihssane, a Moroccan reformist organization Junior State of America, a student run political debate organization Justice Society of America, a DC Comics superhero team JSA , 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