| JSA | Jackson Sumner Associates 
| Others |
| JSA | Jacksonville School for Autism
| Others |
| JSA | James Spence Authentication
| Others |
| JSA | Janitors Society of America
| Others |
| JSA | Japan Sumo Association
| Others |
| JSA | Japanese Society of Allergology
| Others |
| JSA | Japanese Sports Auto
| Others |
| JSA | Japanese Standards Association
| Others |
| JSA | Japanese Student Association
| Others |
| JSA | Japanese Sword Art
| Others |
| JSA | Java Stream Assembly
| Others |
| JSA | Jefferson Science Associates
| Others |
| JSA | Jeffrey Scott Agency
| Others |
| JSA | Jewelers Security Alliance
| Others |
| JSA | Jewish Student Activism
| Others |
| JSA | Jewish Student Association
| Others |
| JSA | Jewish Students' Association
| Others |
| JSA | JIBS Student Association
| Others |
| JSA | Job Safety Analysis
| Others |
| JSA | Job Security Analysis
| Others |
| JSA | Job Seekers Allowance
| Others |
| JSA | John Schneider and Associates
| Others |
| JSA | Johnson Sloane and Associates
| Others |
| JSA | Joint Sales Agreement
| Others |
| JSA | Joint Security Area
| Others |
| JSA | Joint SIGINT Activity
| Others |
| JSA | Joint Staff Assessment
| Others |
| JSA | Journal of Substance Abuse
| Others |
| JSA | Journal of System Architecture
| Others |
| JSA | Journal of Systems Architecture
| Others |
| JSA | Judaica Sound Archives
| Others |
| JSA | Junior Sailing Association
| Others |
| JSA | Junior Semester Abroad
| Others |
| JSA | Junior Sport Academy
| Others |
| JSA | Junior State of America
| Others |
| JSA | Just Simply Awesome
| Others |
| JSA | Just Some Anime
| Others |
| JSA | Just Superman Already
| Others |
| JSA | Justice Society of America
| Others |
| JSA | Justice Studies Association
| Others |
| JSA | Nihon Arerugii Gakkai
| Others |