| Abbreviation | Definition |
|---|---|
| JGN | Jenkins, Goodman, & Neuman |
| JGO | Just Golf Online |
| JGP | John Gibson Plastics |
| JGP | John Gibson Projects |
| JGR | Jack Gaughen, Realtor |
| JGS | John Gibbon & Sons, Ltd. |
| JGS | Jordanhill Garden Supplies |
| JGS | Just Great Software |
| JGT | John Galts Tools |
| JGT | Jon Guerry Taylor, P. E., Inc. |
| JGV | Jerusalem Global Ventures |
| JGW | Jackson Glass Works |
| JGW | John G. Webb, III, Esq. |
| JH | Japan Honda |
| JH | Jim Hubbard & Associates |
| JHA | Jim Hubbard & Associates |
| JHA | John Hewitt & Associates, Inc. |
| JHAC | John Hancock Assignment Company |
| JHB | J. H. Barnes & Associates |
| JHB | J. H. Belcher, C. P. A., P. C. |