| 3201 | HMES | HOLLAND MOTOR EXPRESS INC (USF HOLL | | | SCAC4 |
| 3202 | HMET | Metropolitan Transit Authority of Harris County | City: Houston | US-TX | TRAFFIC |
| 3203 | HMEU | HPCL-MITTAL ENERGY LIMITED | | IND | BIC |
| 3204 | HMEV | HAZ-MAT ENVIRONMENTAL SERVICES LLC | | | SCAC4 |
| 3205 | HMF | Norrlandsflyg AB | Callsign: Lifeguard Sweden, Name changed to Sjofartsverket. | S | AVCODES |
| 3206 | HMF | Sjofartsverket | Callsign: Lifeguard Sweden, Name changed from Norrlandsflyg AB. | S | AVCODES |
| 3207 | HMF | Norrlandsflyg | | | ICAO1 |
| 3208 | HMFA | HEARTLAND MOTOR FREIGHT INC | | | SCAC4 |
| 3209 | HMFE | HIRSCH MOTOR FREIGHT | | | SCAC4 |
| 3210 | HMFG | HAMMOND MANUFACTURING COMPANY LIMIT | | | SCAC4 |
| 3211 | HMFH | HSC MOTOR FREIGHT | | | SCAC4 |
| 3212 | HMFM | H & M FARMS LTD | | | SCAC4 |
| 3213 | HMFR | HIGHLIGHT MOTOR FREIGHT INC | | | SCAC4 |
| 3214 | HMFT | HOMEFRONT TRANSPORT INC | | | SCAC4 |
| 3215 | HMFX | Vulcan Materials Co. | added 4/2008? | | NAKINA |
| 3216 | HMFX | Florida Rock Industries, Inc. | added 4/1977; 1/1980; eliminated 5/1983; 1/1994-7/2005 (not listed) | | NAKINA |
| 3217 | HMFX | Century Industries | added 10/1971; 1/1975; eliminated 4/1977 | | NAKINA |
| 3218 | HMFX | Century Industries | added 10/71; 1/75 | | NRHS |
| 3219 | HMFX | Florida Rock Industries, Inc. | 1/80; eliminated 5/83; 1/94-7/2000 | | NRHS |
| 3220 | HMFX | *FLORIDA ROCK INDUSTRIES, INC. [CENTURY INDUSTRIES] | | | PWRC |
| 3221 | HMFX | +VULCAN MATERIALS CO., CONSTRUCTION MATERIALS GROUP | | | PWRC |
| 3222 | HMFX | Florida Rock Industries (Vulcan Materials) | | | RSRV |
| 3223 | HMFX | VULCAN MATERIALS COMPANY CONSTRUCTI | | | SCAC4 |
| 3224 | HMFX | Century Industries | | USA | TRAFFIC |
| 3225 | HMGE | HUERTA MADRIGAL, GUILLERMO | | | SCAC4 |
| 3226 | HMGK | HMG TRUCKING INC | | | SCAC4 |
| 3227 | HMGL | HEMISPHERE GPS LLC | | | SCAC4 |
| 3228 | HMGQ | H & M INTERNATIONAL TRANSPORTATION | | | SCAC4 |
| 3229 | HMGS | HEMPHILL, G & SONS HOLDING INC | | | SCAC4 |
| 3230 | HMGT | HAMLETT, G P TRUCKING | | | SCAC4 |
| 3231 | HMHS | HEMPHILL & SON INC | | | SCAC4 |
| 3232 | HMHU | OEG OFFSHORE GROUP LIMITED | | SGP | BIC |
| 3233 | HMHU | Hoover Materials Handling Group | | | RSRV |
| 3234 | HMHU | HOOVER MATERIALS | | | SCAC4 |
| 3235 | HMHX | Tank Car Corp. of America | 7/1930-1/1975; eliminated 10/1978 | | NAKINA |
| 3236 | HMHX | Tank Car Corp. of America | 4/38-1/75; eliminated 10/78 | | NRHS |
| 3237 | HMHX | TANK CAR CORP. OF AMERICA | | | PWRC |
| 3238 | HMHX | TANK CAR CORP OF AMERICA | | | SCAC3 |
| 3239 | HMIA | HUTCHERSON METALS INC | | | SCAC4 |
| 3240 | HMIB | HILLTOP MULCH INC | | | SCAC4 |
| 3241 | HMIC | HANAHREUM MART INC | | | SCAC4 |
| 3242 | HMIF | HANSON MFG INC | | | SCAC4 |
| 3243 | HMIK | HAWKINGS, MIKE TRUCKING LLC | | | SCAC4 |
| 3244 | HMINT | Hokkaido Mint Bus | Charter service only | J | TRAFFIC |
| 3245 | HMIQ | HEADMASTE | | | SCAC4 |
| 3246 | HMIX | Henkels & McCoy, Inc. (MofW cars) | 1/1994 (not listed); added 7/1997; 7/2000; eliminated 10/2003; 7/2005 (not listed) | | NAKINA |
| 3247 | HMIX | Henkels & McCoy, Inc. (MofW cars) | 1/94; added 7/97; 7/2000 | | NRHS |
| 3248 | HMIX | HENKELS & MCCOY, INC | | | PWRC |
| 3249 | HMIX | Henkels and McCoy | | | RSRV |
| 3250 | HMIX | HENKELS & MCCOY, INC (M & W | | | SCAC4 |
| 3251 | HMIY | HONEYVILLE METAL INC | | | SCAC4 |
| 3252 | HMJ | AS Ailes Limited d/b/a Harmony Jets | Callsign: Harmong Jets, | M | AVCODES |
| 3253 | HMJ | Hässleholm - Markaryd Järnväg | 1897 - 1930 | S | svenska-lok.se |
| 3254 | HMJG | HAYES, M & J TRUCKING INC | | | SCAC4 |
| 3255 | HMJI | HAMILTON, M J INC | | | SCAC4 |
| 3256 | HMJU | OASIS LEASING AND RENTAL PTE LTD | | SGP | BIC |
| 3257 | HMJX | HELM Financial Corp. | added 7/1995; 7/2000-7/2005 | | NAKINA |
| 3258 | HMJX | HM Joint Venture | eliminated 7/1995 | | NAKINA |
| 3259 | HMJX | HELM Financial Corp. | eliminated 10/1994 | | NAKINA |
| 3260 | HMJX | HM Joint Venture | added 7/1993; 1/1994 | | NAKINA |
| 3261 | HMJX | HM Joint Venture | added 7/93; 1/94 | | NRHS |
| 3262 | HMJX | HELM Financial Corp. | eliminated 10/94 | | NRHS |
| 3263 | HMJX | HM Joint Venture | eliminated 7/95 | | NRHS |
| 3264 | HMJX | HELM Financial Corp. | added 7/95; 7/2000 | | NRHS |
| 3265 | HMJX | HELM EQUIPMENT LEASING CORPORATION (HELM FINANCIAL CORPORATION) | | | PWRC |
| 3266 | HMJX | Helm Financial Corporation | | | RSRV |
| 3267 | HMJX | HELM FINANCIAL CORPORATION | | | SCAC4 |
| 3268 | HMKB | HILMARK BOATS INC | | | SCAC4 |
| 3269 | HMKC | HAULMARK TRANSPORT INC | | | SCAC4 |
| 3270 | HMKE | H & M TRUCKING | | | SCAC4 |
| 3271 | HMKG | HAMILTON TRUCKING | | | SCAC4 |
| 3272 | HMKH | HAULMAN TRUCKING INC | | | SCAC4 |
| 3273 | HMKN | HALLINK RSB INC | | | SCAC4 |
| 3274 | HMKO | HARIMOTO TRUCKING CO | | | SCAC1 |
| 3275 | HMKO | HARIMOTO TRUCKING CO INC | | | SCAC4 |
| 3276 | HMKQ | HODUM TRUCKING INC | | | SCAC4 |
| 3277 | HMKS | HAULMARK SERVICES INC | | | SCAC4 |
| 3278 | HMKT | HOMIAK TRANSPORT INC | | | SCAC4 |
| 3279 | HMKU | WEC LINES BV | | NL | BIC |
| 3280 | HMKU | HOLLAND MAAS SHIPPING BV | | | SCAC4 |
| 3281 | HMKV | HUME, KEVIN | | | SCAC4 |
| 3282 | HML | Hamsal Air Services Limited | IATA: 2H, | WAN | AVCODES |
| 3283 | HMLB | HML BROKERAGE | | | SCAC4 |
| 3284 | HMLD | HOMELAND TRANSPORTATION SERVICE INC | | | SCAC4 |
| 3285 | HMLG | HAMMELL LOGISTICS INC | | | SCAC4 |
| 3286 | HMLH | HARMILL HOLSTEINS | | | SCAC4 |
| 3287 | HMLK | HEMLOCK PRINTERS LTD | | | SCAC4 |
| 3288 | HMLN | HAMILTON TRANSPORTATION LLC | | | SCAC4 |
| 3289 | HMLOK | HM lokstall | | SE | VKM |
| 3290 | HMLQ | HONOLULU MARINE LLC | | | SCAC4 |
| 3291 | HMLR | HUDSON MOVERS LTD | | | SCAC4 |
| 3292 | HMLS | HAMMEL'S EXPRESS, INC | | | SCAC1 |
| 3293 | HMLS | HOMESTRETCH LOGISTICAL SOLUTIONS IN | | | SCAC4 |
| 3294 | HMLT | HAMMELL TRANSPORT SERVICE INC | | | SCAC4 |
| 3295 | HMLU | HINO MOTORS LTD | | | SCAC4 |
| 3296 | HMM | Hamra Air | Callsign: Hamra, Name changed to RAK Airways. | UAE | AVCODES |
| 3297 | HMM | Hamra Air | | | ICAO1 |
| 3298 | HMMC | HARRIS MERCANTILE & MANAGEMENT COMP | | | SCAC4 |
| 3299 | HMME | HAMM | | | SCAC4 |
| 3300 | HMMH | HM & M TRUCKING INC | | | SCAC4 |
