| Abbreviation | Definition |
|---|---|
| JATB | Jack And The Beanstalk |
| JBL | Journal of Biblical Literature |
| JCL | Job Cobol Language |
| JCL | Job Common Language |
| JCL | Journal of Commonwealth Literature |
| JCLL | Journal of Celtic Language Learning |
| JDL | JHipster Domain Language |
| JELI | Journal of Education Language and Ideology |
| JELL | Journal of English Language and Literature |
| JELT | Journal of English Language Teaching |
| JFL | Japanese Foreign Language |
| JFLS | Journal of French Language Studies |
| JIL | Java Intermediate Language |
| JIL | JIL Interfacing Language |
| JJLL | Jadavpur Journal of Languages and Linguistics |
| JLCCA | Journalism Literature and the Creative Communication Arts |
| JLCCA | Journalism Literature Creative Communication Arts |
| JLK | Japanese Language Kit |
| JLP | Japanese Language Programs |
| JLPT | Japanese-Language Proficiency Test |