| Abbreviation | Definition |
|---|---|
| JICRAR | Joint Industry Committee for Radio Audience Research |
| JICTAR | Joint Industry Committee for Television Audience Research |
| JIE | Jornadas de Informatica Educativa |
| JIQ | JIPDEC Information Quarterly |
| JIR | Japan Internet Report |
| JIT | A Journey In Time |
| JJG | Just Jazz Guitar |
| JJJ | J. Jonah Jameson |
| JJQ | James Joyce Quarterly |
| JLTV | Jewish Life TeleVision |
| JMC | Joint Media Centre |
| JMPW | John L. McKenzie: "The Power and the Wisdom" |
| JMSP | Jordan Media Strengthening Program |
| JMT | Jazz Music Today |
| JNK | Joseph N. King |
| JNN | Jacket News Network |
| JNW | JasmineNews |
| JP | Jurassic Park |
| JP | Just Plain |
| JPG | Joint Photographic Experts Group |