| JCERT | Japan Computer Emergency Response Team 
| Others |
| JCERT | Jewish Community Emergency Resiliency Team
| Others |
| JCERT | Jharkhand Council for Education Research and Training
| Others |
| JCERT | Johnson County Education and Research Triangle
| Others |
| JCERT | Johnson County Education Research Triangle
| Others |
| JCERT | Joint Review Committee on Education in Radiologic Technology
| Others |