| 3401 | HMTS | HOLMAN TRANSPORTATION SERVICES INC | | | SCAC4 |
| 3402 | HMTT | HOMETOWN TRANSPORTATION INC | | | SCAC4 |
| 3403 | HMTV | H & M TRANSFER | | | SCAC4 |
| 3404 | HMTX | General American Transportation Corp. | 7/1937-1/1941 | | NAKINA |
| 3405 | HMTX | Hyman Michaels Tank Line, Inc. (General American Tank Car Corp.) | 7/1935 | | NAKINA |
| 3406 | HMTX | Hyman Michaels Tank Line, Inc. | 7/1930 | | NAKINA |
| 3407 | HMTX | Hyman Michaels Tank Line, Inc. (Liquids Despatch Line, Inc.) | 7/1932 | | NAKINA |
| 3408 | HMTX | Hyman Michaels Tank Line (General American Transportation Corp.) | Apr-38 | | NRHS |
| 3409 | HMTX | GENERAL AMERICAN TRANSPORTATION CORP. [LIQUIDS DESPATCH LINE, INC.] (HYMAN MICHAELS TANK LINE, INC.) | | | PWRC |
| 3410 | HMUD | HAMCO UNITED INC | | | SCAC4 |
| 3411 | HMUL | HMU LLC | | | SCAC4 |
| 3412 | HMUV | HUERTA, MANUEL TRUCKING INC | | | SCAC4 |
| 3413 | HMV | Homac Aviation | | | ICAO1 |
| 3414 | HMVA | H MOVING & STORAGE INC | | | SCAC4 |
| 3415 | HMVI | HEALY MOVERS INC | | | SCAC4 |
| 3416 | HMVQ | HILFORD MOVING & STORAGE INC | | | SCAC4 |
| 3417 | HMWB | HERITAGE MILLWORK & WINDOWS LTD | | | SCAC4 |
| 3418 | HMWC | HALTER, MICHAEL W LLC | | | SCAC4 |
| 3419 | HMWL | H & M WHOLESALE INC | | | SCAC4 |
| 3420 | HMWS | HARDI INC | | | SCAC4 |
| 3421 | HMWX | Heckett MultiServ | 7/2005 (not listed) | | NAKINA |
| 3422 | HMWX | HECKETT MULTISERV | | | PWRC |
| 3423 | HMWX | Heckett MultiServ | | | RSRV |
| 3424 | HMWX | HECKETT MULTISERV | | | SCAC4 |
| 3425 | HMX | Hawk de Mexico S.A. de C.V. | Callsign: Hawk Mexico, | MEX | AVCODES |
| 3426 | HMX | Hawk De Mexico | | | ICAO1 |
| 3427 | HMX | Hyman-Michaels Co., a Division of Azcon Corp. | added 4/1977; 1/1980; eliminated 4/1984 | | NAKINA |
| 3428 | HMX | Hyman-Michaels Co. | 7/1930-1/1975; eliminated 4/1977 | | NAKINA |
| 3429 | HMX | Hyman-Michaels Co. | 4/38-1/75 | | NRHS |
| 3430 | HMX | Hyman-Michaels Co., a Division of Azcon Corp. | 1/80; eliminated 4/84 | | NRHS |
| 3431 | HMX | HYMAN-MICHAELS CO., DIV. AZCON CORP. | | | PWRC |
| 3432 | HMXC | HOLMER TRANSPORT INC | | | SCAC4 |
| 3433 | HMXD | HOLMES TRANSPORT LTD | | | SCAC4 |
| 3434 | HMXI | HOMELAND EXPRESS INC | | | SCAC4 |
| 3435 | HMXL | HAMMTRANS LLC | | | SCAC4 |
| 3436 | HMXO | HOMAX OIL SALES INC | | | SCAC4 |
| 3437 | HMXT | HAMMONDS TRANSPORT | | | SCAC4 |
| 3438 | HMY | HMY Airways, Inc. | IATA: HQ, Callsign: Harmony, Name changed to HMY Airways, Inc. d/b/a Harmony Airways | CDN | AVCODES |
| 3439 | HMY | HMY Airways, Inc. d/b/a Harmony Airways | IATA: HQ, Callsign: Harmony, Founded in 2002. Ceased operationon 09 April 2007. Name changed from HMY Airways, Inc. | CDN | AVCODES |
| 3440 | HMY | Harmony Airways | IATA: HQ | | ICAO1 |
| 3441 | HMYQ | HAMMONDS | | | SCAC4 |
| 3442 | HMZ | Nigerian International Air Services Limited (Hamzair) | Callsign: Hamzair, | WAN | AVCODES |
| 3443 | HN | Proteus Helicopters | ICAO: PTH, Callsign: Proteus, Name changed to INAER Helicopter France. | F | AVCODES |
| 3444 | HN | NLM Cityhopper B.V. | ICAO: NLM, Callsign: City, Name changed to KLM Cityhopper B.V. | NL | AVCODES |
| 3445 | HN | KLM Cityhopper B.V. | ICAO: NLM, Callsign: City, IATA designator changed to WA / ICAO desigantor changed to KLC. Name changed from NLM Cityhopper B.V. | NL | AVCODES |
| 3446 | HN | N.L.M. Dutch Airlines Ltd. (Nederlandse Luchtvaart Maatschappij N.L.M. N.V.) | ICAO: NLM, Name changed to NLM Cityhopper B.V. | NL | AVCODES |
| 3447 | HN | Heavylift Cargo Airlines Pty Ltd. | ICAO: HVY, Callsign: Heavy Cargo, | AUS | AVCODES |
| 3448 | HN | INAER Helicopter France | ICAO: PTH, Callsign: Proteus, Name changed to Babcock Mission Critical Services France. Name changed from Proteus Helicopters. | F | AVCODES |
| 3449 | HN | Babcock Mission Critical Services France | ICAO: PTH, Callsign: Proteus, Name changed from INAER Helicopter France. Previously name changed from Proteus Helicopters. | F | AVCODES |
| 3450 | HN | UAB Heston Airlines JSC | ICAO: HST, Callsign: Heston, IATA Prefix code 680 recalled. | LT | AVCODES |
| 3451 | HN | Equinoxair S.A.S. | ICAO: EQX, Callsign: Equinox, | EC | AVCODES |
| 3452 | HN | Hutchinson and Northern Ry. Co. | 1/1975; added 1/1978; 1/1980; eliminated 7/1987; eliminated 10/1993; 1/1994 (not listed); 7/2000-7/2005 | | NAKINA |
| 3453 | HN | Hutchinson and Northern Ry. Co. | 1/75; added 1/78; 1/80; eliminated 7/87; eliminated 10/93; 1/94-7/2000 | | NRHS |
| 3454 | HN | HUTCHINSON & NORTHERN RAILWAY COMPANY | | | PWRC |
| 3455 | HN | Hutchinson and Northern Railway | | | RSRV |
| 3456 | HN | HUTCHINSON AND NORTHERN RAILWAY COM | | | SCAC4 |
| 3457 | HNA | Greek Navy (Hellenic Navy) | Callsign: Hellenic Navy, | GR | AVCODES |
| 3458 | HNA | Henson Aviation, Inc. | Callsign: Henson, | USA | AVCODES |
| 3459 | HNA | Greek Navy | | | ICAO1 |
| 3460 | HNA | Henson Airlines | | USA | TRAFFIC |
| 3461 | HNAC | HAMANISHI, NANCY | | | SCAC4 |
| 3462 | HNAE | HERITAGE RELOCATION SERVICES | | | SCAC4 |
| 3463 | HNAL | HANSEN, DICK SALES INC | | | SCAC4 |
| 3464 | HNBC | HOUSTON BECNEL INC | | | SCAC4 |
| 3465 | HNBD | HARRISON, BILL N DEB | | | SCAC4 |
| 3466 | HNBN | HERMAN, BYRON | | | SCAC1 |
| 3467 | HNBN | HERMAN, BYRON | | | SCAC4 |
| 3468 | HNBO | HORN BROS INC | | | SCAC4 |
| 3469 | HNCA | HINCE TRANSPORT | | | SCAC4 |
| 3470 | HNCF | HANSEN CUSTOM FARMING | | | SCAC4 |
| 3471 | HNCH | HENSCHEN OIL INC | | | SCAC4 |
| 3472 | HNCL | HARDIN, CHARLES L TRUCKING INC | | | SCAC4 |
| 3473 | HNCM | HAULTRANS.COM | | | SCAC4 |
| 3474 | HNCP | HONCOOP TRUCKING LLC | | | SCAC4 |
| 3475 | HNCQ | HONEY CELL INC | | | SCAC4 |
| 3476 | HNCS | HUNSAKER OIL COMPANY INC | | | SCAC4 |
| 3477 | HNCY | HOHENSTEIN & COMPANY INC. | | | SCAC4 |
| 3478 | HND | Hinterland Aviation Pty Ltd | IATA: OI, Callsign: Hinterland, | AUS | AVCODES |
| 3479 | HNDE | HANDY ENTERPRISES INC | | | SCAC4 |
| 3480 | HNDF | HENDERSON FUEL CO | | | SCAC4 |
| 3481 | HNDG | HAND TRUCKING COMPANY | | | SCAC4 |
| 3482 | HNDI | HENDERSON OIL CO INC | | | SCAC4 |
| 3483 | HNDK | HENDERSON TRUCKING | | | SCAC4 |
| 3484 | HNDL | HINDERLITER TRUCKING HOME ACRES BUI | | | SCAC4 |
| 3485 | HNDM | H N D AND COMPANY | | | SCAC4 |
| 3486 | HNDN | HINDS EXPRESS INC | | | SCAC4 |
| 3487 | HNDR | HENDERSON OIL CORP | | | SCAC4 |
| 3488 | HNDS | HENDERSON, C L TRUCKING INC | | | SCAC4 |
| 3489 | HNDY | HANDY TRUCK LINE, INC | | | SCAC4 |
| 3490 | HNEJ | HOEPPNER, ERNEST J | | | SCAC4 |
| 3491 | HNES | HAINES, RAY TRUCKING LLC | | | SCAC4 |
| 3492 | HNFA | HUENEMAN FARMS LC | | | SCAC4 |
| 3493 | HNFE | HOMETOWN FUEL LLC | | | SCAC4 |
| 3494 | HNFF | HAGENS FASTER FREIGHT | | | SCAC4 |
| 3495 | HNFG | HANSON FREIGHT | | | SCAC1 |
| 3496 | HNFH | HUNTSINGER FARMS INC | | | SCAC4 |
| 3497 | HNFL | HANSEN FREIGHTLINES INC | | | SCAC4 |
| 3498 | HNFM | HANNS FARMS LTD | | | SCAC4 |
| 3499 | HNFU | H & F HOLDING | | | SCAC4 |
| 3500 | HNGA | HOENIG, GENE INC | | | SCAC4 |
