| 1 | GRU | GRAFTON & UPTON RAILROAD CO. | | | PWRC |
| 2 | GRUD | Miejski Zaklad Komunikacji w Grudziadzu | Real: MZKG, City: Grudziadz | PL | TRAFFIC |
| 3 | GRUE | GRUELLE, D T COMPANY | | | SCAC4 |
| 4 | GRUF | GRUPO FIGUEROA TRANSPORTA S A DE C | | | SCAC4 |
| 5 | GRUI | GRUPO INNOVADOR DE COAHUILA S A | | | SCAC4 |
| 6 | GRUL | GRANITE PLUS INC | | | SCAC4 |
| 7 | GRUM | Grumman | | USA | TRAFFIC |
| 8 | GRUR | GRUPO LOGICO LLC | | | SCAC4 |
| 9 | GRUS | GREEN LIGHT COURIER | | | SCAC4 |
| 10 | GRUT | GRUBES TRUCKING INC | | | SCAC4 |
| 11 | GRUU | GRUBER GMBH & CO.KG | | D | BIC |
| 12 | GRUU | GRUBER GMBH & CO KG | | | SCAC4 |
