| JCET | Jagiellonian Centre for Experimental Therapeutics 
| Others |
| JCET | Jawaharlal College of Engineering and Technology
| Others |
| JCET | Jayam College of Engineering and Technology
| Others |
| JCET | Jiangsu College of Engineering and Technology
| Others |
| JCET | Joint Combined Exchange Training
| Others |
| JCET | Joint Combined Exercise For Training
| Others |
| JCET | Journal of Computer Engineering and Technology
| Others |