| Abbreviation | Definition |
|---|---|
| JJO | Joseph Jacobs Organization |
| JJP | J J Plastic Fabrications, LTD. |
| JJP | Just Jayne Productions |
| JJR | James J. Reeves, Inc. |
| JJS | Jehovah Jireh Softwares |
| JJS | John Johnson Software |
| JJSC | Johnson & Johnson Supply Chain |
| JJSI | Johnson and Johnson Services Inc |
| JJSI | Johnson Johnson Services Inc |
| JJT | Jack Jones Trucking, Inc. |
| JJT | Jack Jones Trucking, Incorporated |
| JJW | James J. Williams Bulk Transport Company |
| JKB | John K. Birgel Reptiles |
| JKC | Jörg Kopp Consulting |
| JKC | Judith Keenan Communications |
| JKC | Judith Keenan Communications, Inc. |
| JKD | James Kenefick Designs |
| JKE | Jedi Knight Entertainment |
| JKE | Jim Kimball Enterprises |
| JKE | Jim Kimball Enterprises, Inc. |