| Acronym | Definition |
|---|
| RKJ➣Rooms Katholieke Jongerengroep (Dutch: Roman Catholic Youth Group; Netherlands) |
| RKJ➣Revised King James (version of the Bible) |
| RKJ➣Residentieel Kortdurend Jongerenprogramma (Dutch: Short-Term Residential Youth Program; Belgium) |
| RKJ➣Rotor Kick Jr. (assembly tool) |