| 1 | HIR | HOLTON INTERURBAN RAILWAY CO. | | | PWRC |
| 2 | HIRA | HI-REL ALLOYS LTD | | | SCAC4 |
| 3 | HIRB | HIRD, BILL | | | SCAC4 |
| 4 | HIRC | HOUSTON INTERMODAL RESOURCES LLC | | | SCAC4 |
| 5 | HIRI | HIRAI TRUCKING | | | SCAC1 |
| 6 | HIRM | HIRAM ENTERPRISES INC | | | SCAC4 |
| 7 | HIRO | HILL-ROM LOGISTICS LLC | | | SCAC4 |
| 8 | HIRO | | City: Hiroshima | J | TRAFFIC |
| 9 | HIROB | Hiroshima Bus Co. | | J | TRAFFIC |
| 10 | HIROD | Hiroshima Electric Railway | | J | TRAFFIC |
| 11 | HIROS | | City: Hiroshima | J | TRAFFIC |
| 12 | HIRR | Hainesport Industrial R.R. LLC | added 4/2006 | | NAKINA |
| 13 | HIRR | HAINESPORT INDUSTRIAL RAILROAD, LLC | | | PWRC |
| 14 | HIRR | HAINESPORT INDUSTRIAL RAILROAD LLC | | | SCAC4 |
| 15 | HIRS | HIRSCHBACH MOTOR LINES INC | | | SCAC4 |
| 16 | HIRT | HIRT, JIM TRUCKING INC | | | SCAC4 |
| 17 | HIRX | TRANSPORTATION SERVICES AND EQUIPME | | | SCAC4 |
