| Abbreviation | Definition |
|---|---|
| JB | Jesuit Brother |
| JB | Jewish Bible |
| JBC | Johnson Bible College |
| JBC | Judson Baptist College |
| JBCA | Judson Baptist College Alumni |
| JBCAA | Judson Baptist College Alumni Association |
| JBCH | Jefferson Brethren Church |
| JBH | Japan Baptist Hospital |
| JBL | Joy, Beauty, Life |
| JBQ | Jewish Bible Quarterly |
| JBQ | Junior Bible Quiz |
| JBT | Jacksonville Baptist Temple |
| JBT | Jeffersonville Baptist Temple |
| JBT | Johnstown Baptist Temple |
| JC | Jesus Christ |
| JCA | JCSGO Christian Academy |
| JCA | Joint Church Aid |
| JCA | Joint Cultural Appeal |
| JCC | Joint Christian Chaplaincies |
| JCCA | Johnson Corners Christian Academy |