| 2301 | HLA | Hjørring - Løkken - Åbybro | 1913 - 1969 | DK | TRAFFIC |
| 2302 | HLAA | HOLLIS LOGISTICS SERVICES LLC | SCAC4 | ||
| 2303 | HLAC | H & L ALUMINUM USA | SCAC4 | ||
| 2304 | HLAE | HALL TRUCKING, INC. | SCAC1 | ||
| 2305 | HLAE | HL TRUCKING | SCAC4 | ||
| 2306 | HLAG | HOLIDAY TRAILS RESORTS INC | SCAC4 | ||
| 2307 | HLAM | HARBIN, LARRY MOBILE HOME SERVICE | SCAC4 | ||
| 2308 | HLAN | HANLAN TRUCKING | SCAC4 | ||
| 2309 | HLAO | HCI LOGISTICS | SCAC4 | ||
| 2310 | HLAP | HELLAS TRANSPORT CO | SCAC4 | ||
| 2311 | HLAQ | HOVERSON, LOYD A TRUCKING INC | SCAC4 | ||
| 2312 | HLAR | HI-LINE TRANSPORTATION INC | SCAC4 | ||
| 2313 | HLAS | HOLLAND, SEAN L | SCAC4 | ||
| 2314 | HLAT | HALLAND TRANSPORTATION | SCAC4 | ||
| 2315 | HLAV | HURRICANE LOGISTICS LLC | SCAC4 | ||
| 2316 | HLB | High-Line Airways | ICAO1 | ||
| 2317 | HLB | Hessische Landesbahn GmbH | Frankfurt (HLB-Gruppe) | D | privat-bahn.de |
| 2318 | HLB | HARLOWS BUS SERVICE INC | SCAC4 | ||
| 2319 | HLB | Hessische Landesbahn GmbH | D | TRAFFIC | |
| 2320 | HLB | HLB Basis AG | DE | VKM | |
| 2321 | HLBA | H L B TRANSPORTATION SERVICES | SCAC4 | ||
| 2322 | HLBC | HOLT TRANSPORT BROKERAGE LLC | SCAC4 | ||
| 2323 | HLBI | HORVATS LIVE BAIT INC | SCAC4 | ||
| 2324 | HLBL | HILBRANDS, LEE TRUCKING INC | SCAC4 | ||
| 2325 | HLBP | HILL BROS PRO-FLEET | SCAC4 | ||
| 2326 | HLBQ | H & L BROKERAGE INC | SCAC4 | ||
| 2327 | HLBR | HILDEBRAND, WESLEY P | SCAC4 | ||
| 2328 | HLBT | HILBURN TRUCKING INC | SCAC4 | ||
| 2329 | HLBY | HILLBILLY EXPRESS INC | SCAC4 | ||
| 2330 | HLBZ | HILL BROTHERS TRANSPORTATION | PWRC | ||
| 2331 | HLBZ | Hill Brothers Transportation | RSRV | ||
| 2332 | HLBZ | HILL BROTHERS TRANSPORTATION | SCAC4 | ||
| 2333 | HLC | Helicap | ICAO1 | ||
| 2334 | HLC | HAPAG-LLOYD AG | PWRC | ||
| 2335 | HLC | HANAFAN, LILA C | SCAC4 | ||
| 2336 | HLCA | HALL, CASEY LEE | SCAC4 | ||
| 2337 | HLCB | H & L CHARTER CO INC | SCAC4 | ||
| 2338 | HLCD | HALLOCK, C D TRUCKING | SCAC4 | ||
| 2339 | HLCF | HEARTLAND CATFISH | SCAC4 | ||
| 2340 | HLCG | HARRIS, LEE, TRUCKING CO | SCAC1 | ||
| 2341 | HLCG | HARRIS, LEE TRUCKING CO | SCAC4 | ||
| 2342 | HLCH | HALL, CHARLES A | SCAC4 | ||
| 2343 | HLCI | HIGHLANDER CARRIERS INC | SCAC4 | ||
| 2344 | HLCL | HLC CULLIPHER LLC | SCAC4 | ||
| 2345 | HLCM | HALL, C M & SONS | SCAC4 | ||
| 2346 | HLCN | HELLS CANYON GUIDE SERVICE | SCAC4 | ||
| 2347 | HLCO | HAULERS CO INC | SCAC4 | ||
| 2348 | HLCP | HELICOPTER FLIGHT SERVICES INC | SCAC4 | ||
| 2349 | HLCS | HILLCREST TRANSPORTATION INC | SCAC4 | ||
| 2350 | HLCT | HILLCREST TRANSPORT | SCAC4 | ||
| 2351 | HLCU | HAPAG LLOYD CONTAINER LINE | PWRC | ||
| 2352 | HLCU | Hapag-Lloyd | RSRV | ||
| 2353 | HLCU | HAPAG-LLOYD A G | SCAC1 | ||
| 2354 | HLCU | HAPAG LLOYD A G | SCAC4 | ||
| 2355 | HLCV | HARBOUR LINK CONTAINER SERVICES INC | SCAC4 | ||
| 2356 | HLCX | Helm Financial Corp. | added 7/1992; 1/1994-7/2005 | NAKINA | |
| 2357 | HLCX | Howes Leather Co., Inc. | added 4/1968; eliminated 1/1970 | NAKINA | |
| 2358 | HLCX | J.M. Huber Co., Inc. | 7/1937-1/1946 | NAKINA | |
| 2359 | HLCX | J.M. Huber Inc. | 7/1935 | NAKINA | |
| 2360 | HLCX | J.M. Huber Co. of Louisiana, Inc. | 7/1930-7/1932 | NAKINA | |
| 2361 | HLCX | J.M. Huber Inc. | Apr-38 | NRHS | |
| 2362 | HLCX | Howes Leather Co., Inc. | added 4/68; eliminated 1/70 | NRHS | |
| 2363 | HLCX | Helm Financial Corp. | added 7/92; 1/94-7/2000 | NRHS | |
| 2364 | HLCX | *J.M. HUBER CO., INC. | PWRC | ||
| 2365 | HLCX | *HOWES LEATHER CO., INC. | PWRC | ||
| 2366 | HLCX | +HELM LEASING COMPANY (HELM FINANCIAL CORPORATION) | PWRC | ||
| 2367 | HLCX | Helm Leasing | RSRV | ||
| 2368 | HLCX | HELM FINANCIAL CORPORATION | SCAC4 | ||
| 2369 | HLCX | Helm Financial Corporation | USA | TRAFFIC | |
| 2370 | HLCY | HALCYON TRUCKING INC | SCAC4 | ||
| 2371 | HLCZ | HARVESTLAND CO-OP | PWRC | ||
| 2372 | HLD | Grampian Flight Centre | ICAO1 | ||
| 2373 | HLDA | HIGHLAND TRANSPORTATON GROUP LLC | SCAC4 | ||
| 2374 | HLDB | HILDEBRANDT, GEORGE, INC | SCAC4 | ||
| 2375 | HLDC | HOLLAND COMPANY INC | SCAC4 | ||
| 2376 | HLDD | HOLIDAY TOURS INC | SCAC4 | ||
| 2377 | HLDG | HEARTLAND TRUCKING | SCAC4 | ||
| 2378 | HLDI | HOLLAND, DONALD TRUCKING INC | SCAC4 | ||
| 2379 | HLDL | HEARTLAND TRANSPORT LLC | SCAC4 | ||
| 2380 | HLDN | HILDEBRAND, AL TRUCKING LTD | SCAC4 | ||
| 2381 | HLDS | HOTLINE DELIVERY SYSTEMS | SCAC4 | ||
| 2382 | HLDT | HIGHLAND TRANSPORT INC | SCAC4 | ||
| 2383 | HLDV | HALL, DAVID | SCAC4 | ||
| 2384 | HLDW | HAKAI LODGE INC | SCAC4 | ||
| 2385 | HLDY | HOLIDAY TRUCKING | SCAC4 | ||
| 2386 | HLE | UK HEMS | ICAO1 | ||
| 2387 | HLEB | HOEGH LNG AS | SCAC4 | ||
| 2388 | HLEC | HEAVY LOADS EXPRESS LLC | SCAC4 | ||
| 2389 | HLEF | LEIF HOEGH & CO A/S | SCAC3 | ||
| 2390 | HLEF | LEIF HOEGH & CO A/S | SCAC4 | ||
| 2391 | HLEL | HOLLAND EQUIPMENT LIMITED | SCAC4 | ||
| 2392 | HLEN | HILLS ENTERPRISES INC OF SOUTHWESTE | SCAC4 | ||
| 2393 | HLEP | HAMMER LANE EXPRESS | SCAC4 | ||
| 2394 | HLEQ | HOOD LOGGING EQUIPMENT | SCAC4 | ||
| 2395 | HLEX | Flint Hills Resources LP | added 1/2009 | NAKINA | |
| 2396 | HLEX | Huntsman Polymers Corp. | added 7/2002; 7/2005; eliminated 1/2009 | NAKINA | |
| 2397 | HLEX | Huntsman Corp. | added 4/2002; eliminated 7/2002 | NAKINA | |
| 2398 | HLEX | Huntsman Polymers Corp. | 7/2000 (not listed); added 1/2001; eliminated 4/2002 | NAKINA | |
| 2399 | HLEX | Huntsman Polymers Corp. | 7/2000; added 1/2001 | NRHS | |
| 2400 | HLEX | HUNTSMAN POLYMERS CORP. | PWRC |