| 1 | HR | Heritage R.R. Corp. | added 1/2004; eliminated 7/2004; 7/2005 | NAKINA | |
| 2 | HR | HERITAGE RAILROAD CORP. | PWRC | ||
| 3 | HR | HERITAGE RAILROAD CORP | SCAC4 | ||
| 4 | HRA | Heli-Iberica | ICAO1 | ||
| 5 | HRAA | HAYNES TRANSPORT | SCAC4 | ||
| 6 | HRAB | HARMAC REBAR & STEEL CORP | SCAC4 | ||
| 7 | HRAC | HAMILTON, RAY, COMPANY, THE | SCAC1 | ||
| 8 | HRAC | HAMILTON, RAY COMPANY, THE | SCAC4 | ||
| 9 | HRAF | HESTER, R F | SCAC4 | ||
| 10 | HRAI | HIERO, ARTISTICO S A DE C V | SCAC4 | ||
| 11 | HRAIL | Eiffage Rail GmbH | DE | VKM | |
| 12 | HRAJ | HRA | SCAC4 | ||
| 13 | HRAK | HARKER RANCH | SCAC4 | ||
| 14 | HRAN | HARRIS, J A TRUCKING | SCAC4 | ||
| 15 | HRAO | HAMBURG RADIATOR AUTO & AIR | SCAC4 | ||
| 16 | HRAR | HARVIE RANCHING | SCAC4 | ||
| 17 | HRAY | HAND, RAY R | SCAC4 | ||
| 18 | HRB | Haiti International Airline | ICAO1 | ||
| 19 | HRBA | HARBOR AUTO TRANSPORT INC | SCAC4 | ||
| 20 | HRBG | HARDWOOD EXPRESS INC | SCAC4 | ||
| 21 | HRBK | HERRBOLDT TRUCKING | SCAC4 | ||
| 22 | HRBL | H & R BALING COMPANY INC | SCAC4 | ||
| 23 | HRBQ | HARRIS RANCH BEEF COMPANY | SCAC4 | ||
| 24 | HRBR | HARBOR EXPRESS INC | SCAC4 | ||
| 25 | HRBT | HARBOR TRANSPORT INC | SCAC4 | ||
| 26 | HRC | HISTORICAL RAILROAD CARS | PWRC | ||
| 27 | HRCA | HERCORP TRANSPORT INC | SCAC4 | ||
| 28 | HRCB | HAMBURG REEFER CHARTERING GMBH | SCAC4 | ||
| 29 | HRCD | HOT ROD CORNER PARTS AND ACCESSORIE | SCAC4 | ||
| 30 | HRCF | HERCULES FORWARDING, INC | SCAC1 | ||
| 31 | HRCF | HERCULES FORWARDING INC | SCAC4 | ||
| 32 | HRCG | HARDIES FRUIT & VEGETABLE CO INC | SCAC4 | ||
| 33 | HRCH | HAR-G TRANSPORT | SCAC4 | ||
| 34 | HRCK | COOK, H R TRUCK LINE, INC | SCAC3 | ||
| 35 | HRCO | HARCO CARRIERS INC | SCAC4 | ||
| 36 | HRCS | HAMPTON ROADS CRANE & RIGGING COMPA | SCAC4 | ||
| 37 | HRCU | CUBA RON S A | SCAC4 | ||
| 38 | HRCX | Heritage Railcar | 1/1994-7/2005 (not listed) | NAKINA | |
| 39 | HRCX | Heritage Railcar | 1/94-7/2000 | NRHS | |
| 40 | HRCX | HERITAGE RAILCAR | PWRC | ||
| 41 | HRCX | Heritage Railcar | RSRV | ||
| 42 | HRCX | HERITAGE RAILCAR | SCAC4 | ||
| 43 | HRDD | HARTS RAPID DELIVERY | SCAC4 | ||
| 44 | HRDE | H R DENTAL PRODUCTS INC | SCAC4 | ||
| 45 | HRDF | HOT ROD TRUCKING SERVICES INC | SCAC4 | ||
| 46 | HRDH | HAMMER, D TRUCKING INC | SCAC4 | ||
| 47 | HRDK | HORD TRUCKING INC | SCAC4 | ||
| 48 | HRDL | Hudson River Day Line | 1/1975-1/1980 | NAKINA | |
| 49 | HRDL | Hudson River Day Line | 1/75-1/80 | NRHS | |
| 50 | HRDL | HUDSON RIVER DAY LINE | PWRC | ||
| 51 | HRDL | Hudson River Day Line | RSRV | ||
| 52 | HRDM | HARDING METALS INC | SCAC4 | ||
| 53 | HRDN | HARDIN TRUCKING INC | SCAC4 | ||
| 54 | HRDR | HARRIS DISTRIBUTING COMPANY | SCAC4 | ||
| 55 | HRDV | HERNANDEZ RIVAS, JULIAN ALONSO | SCAC4 | ||
| 56 | HRDX | Silver Star Enterprises, Inc. | added 1/1994; 7/2000; eliminated 7/2004; 7/2005 (not listed) | NAKINA | |
| 57 | HRDX | M-P Petroleum Ltd. | added 10/1975; eliminated 10/1978 | NAKINA | |
| 58 | HRDX | Hagaman Refining Co. | 8/1920 | NAKINA | |
| 59 | HRDX | Hydrocarbons Inc. | added 10/1974; 1/1975; eliminated 10/1975 | NAKINA | |
| 60 | HRDX | Hydrocarbons Inc. | added 10/74; 1/75 | NRHS | |
| 61 | HRDX | M-P Petroleum Ltd. | eliminated 10/78 | NRHS | |
| 62 | HRDX | Silver Star Enterprises, Inc. | added 1/94; 7/2000 | NRHS | |
| 63 | HRDX | *HAGAMAN REFINING CO. | PWRC | ||
| 64 | HRDX | *M-P PETROLEUM LTD. [HYDROCARBONS, INC.] | PWRC | ||
| 65 | HRDX | +SILVER STAR ENTERPRISES, INC. | PWRC | ||
| 66 | HRDX | Hagaman Refining (Silver Star Enterprises) | RSRV | ||
| 67 | HREE | FIVE FIVE SEVEN | SCAC4 | ||
| 68 | HREF | HARE FREIGHT SERVICES INC | SCAC4 | ||
| 69 | HREI | HOUSTON RYDER EXPRESS INC | SCAC4 | ||
| 70 | HREL | HARD ROCK ENTERPRISES LLC | SCAC4 | ||
| 71 | HREM | HOLIDAY RETIREMENT | SCAC4 | ||
| 72 | HREN | HERREN ENTERPRISES INC | SCAC4 | ||
| 73 | HREO | HERRERA, | SCAC4 | ||
| 74 | HREP | HERMITAGE EXPRESS | SCAC1 | ||
| 75 | HREP | HILDABY RIDGE EXPRESS | SCAC4 | ||
| 76 | HRET | HARRIS TRANSPORTATION COMPANY LLC | SCAC4 | ||
| 77 | HREX | Heavy Railroad Excavations, Inc. | 7/2000-7/2005 (not listed) | NAKINA | |
| 78 | HREX | Heavy Railroad Excavations, Inc. | Jul-00 | NRHS | |
| 79 | HREX | HEAVY RAILROAD EXCAVATIONS INC | PWRC | ||
| 80 | HREX | Heavy Railroad Excavations | RSRV | ||
| 81 | HRFD | HARRIS FEEDING CO | SCAC1 | ||
| 82 | HRFO | HERFO A/S | SCAC4 | ||
| 83 | HRFX | H.R. Farmer, owner, Farmer Tank Line | 1/1946-4/1947 | NAKINA | |
| 84 | HRFX | H. R. FARMER (FARMER TANK LINES) | PWRC | ||
| 85 | HRGC | HERITAGE ART EDITIONS INC | SCAC4 | ||
| 86 | HRGI | HORNING, ROD TRUCKING INC | SCAC4 | ||
| 87 | HRGK | HARRING, K L TRANSPORTATION LLC | SCAC4 | ||
| 88 | HRGO | HERITAGE OIL INC | SCAC4 | ||
| 89 | HRGS | HARGIS TRUCK LINES | SCAC1 | ||
| 90 | HRGT | HARRINGTON TRUCKING LLC | SCAC4 | ||
| 91 | HRH | Royal Tongan Airlines | IATA: WR | ICAO1 | |
| 92 | HRHF | HIRSCH FUELS INC | SCAC4 | ||
| 93 | HRHJ | HUMMER, R H JR INC | SCAC4 | ||
| 94 | HRHP | HANSEN, R H PROPERTIES LLC | SCAC4 | ||
| 95 | HRI | Skyraidybos Mokymo Centras | ICAO1 | ||
| 96 | HRIB | HRIBAR LOGISTICS LLC | SCAC4 | ||
| 97 | HRID | HIGHWAY RIDERS | SCAC4 | ||
| 98 | HRIG | HARRIS, RICHARD G | SCAC4 | ||
| 99 | HRIK | HAMMOND, RICKY | SCAC4 | ||
| 100 | HRIP | HRI INC | SCAC4 |