| JACS | Japanese American Confinement Sites 
| Others |
| JACS | Jersey Advisory Conciliation Service
| Others |
| JACS | Jewish Addiction Community Services
| Others |
| JACS | Joint Academic Classification of Subjects
| Others |
| JACS | Joint Academic Coding System
| Others |
| JACS | Joint Automated Communication-Electronics Operating Instructions System
| Others |
| JACS | Journal of the American Ceramic Society
| Others |
| JACS | Journal of the American Chemical Society
| Others |
| JACS | Journal of the American College of Surgeons
| Others |
| JACS | Judicial Automated Calendaring System
| Others |
| JACS | Judiciary Account Charge System
| Others |
| JACS | JUMPS (Joint Uniform Military Pay System) Army Automated Coding System
| Others |
| JACS | Junior Adaptive Carrier System
| Others |