| 3301 | KMIT | KOREA MARINE TRANSPORT | | | SCAC3 |
| 3302 | KMIU | KUANG MING ENTERPRISE CO. LTD | | RC | BIC |
| 3303 | KMIU | KUANG MING ENTERPRISE CO LTD | | | SCAC4 |
| 3304 | KMIW | KANSAN MARINE INC | | | SCAC4 |
| 3305 | KMJB | KAMIEN, JACK B | | | SCAC3 |
| 3306 | KMJM | KMJ MACHINERY MOVERS INC | | | SCAC4 |
| 3307 | KMJP | KMJ TRANSPORT | | | SCAC4 |
| 3308 | KMK | Kamaka Air, Inc. | Callsign: Kamaka, | USA | AVCODES |
| 3309 | KMKI | KAISER, MIKE | | | SCAC3 |
| 3310 | KMKM | Klub Miłośników Komunikacji Miejskiej w Warszawie | City: Warszawa | PL | TRAFFIC |
| 3311 | KMKN | K A M TRUCKING INC | | | SCAC3 |
| 3312 | KMKO | KMC-KOOTRAC | | | SCAC4 |
| 3313 | KMKOL | Komunikacja Miejska w Kołobrzegu, sp. z o.o. | Real: KM, City: Kołobrzeg | PL | TRAFFIC |
| 3314 | KMKOL | „Koleje Mazowieckie – KM” sp. z o.o. | | PL | VKM |
| 3315 | KMKQ | KIMOLOS MARITIME CORPORATION | | | SCAC3 |
| 3316 | KMKR | KRAMER & KRAMER INC | | | SCAC4 |
| 3317 | KMKX | Intercoastal Capital Corp. | added 4/2007 | | NAKINA |
| 3318 | KMKX | INTERCOASTAL CAPITAL CORP. | | | PWRC |
| 3319 | KMKX | INTERCOASTAL CAPITAL CORPORATION | | | SCAC4 |
| 3320 | KML | Kreisbahn Mansfelder Land GmbH | Hettstedt | D | privat-bahn.de |
| 3321 | KML | Koleje Malopolskie | | PL | TRAFFIC |
| 3322 | KML | Kreisbahn Mansfelder Land | | DE | VKM |
| 3323 | KMLC | K & M LOGISTICS | | | SCAC4 |
| 3324 | KMLL | K MAG LLC | | | SCAC4 |
| 3325 | KMLO | K & M LIMOUSINE | | | SCAC3 |
| 3326 | KMLOM | Komunikacja Miejska Lomianki, sp. z o.o. | Real: KML, City: Lomianki | PL | TRAFFIC |
| 3327 | KMLQ | KIMOLOS MARITIME CORPORATION | | | SCAC3 |
| 3328 | KMLR | KAMLER, RICHARD A | | | SCAC3 |
| 3329 | KMLR | KML CARRIERS LLC | | | SCAC4 |
| 3330 | KMLS | KNICKERBOCKER MOTOR LINES, INC | | | SCAC3 |
| 3331 | KMLT | KIMLINE TRANSPORTATION SERVICES CO | | | SCAC3 |
| 3332 | KMLT | KEY MARITIME LTD | | | SCAC4 |
| 3333 | KMLU | MAXWAY MARITIME SA | | | SCAC4 |
| 3334 | KMMI | KELLY MOSS MOTORSPORTS INC | | | SCAC4 |
| 3335 | KMMO | KELSEY MACHINERY MOVERS | | | SCAC3 |
| 3336 | KMMR | KOMMAR COMPANHIA MARITIMA | | | SCAC3 |
| 3337 | KMMS | KIMERLING, M & SONS INC | | | SCAC3 |
| 3338 | KMMU | KMA RESOURCES PTE LTD | | | SCAC4 |
| 3339 | KMMV | KOHLS MAMARONECK MOVERS INC | | | SCAC3 |
| 3340 | KMMX | MARCHA | | | SCAC4 |
| 3341 | KMND | KLUCKMAN DELIVERY, INC | | | SCAC3 |
| 3342 | KMNI | KAMNER INTERNATIONAL LOGISTICS LTD | | | SCAC4 |
| 3343 | KMNJ | KILIMANJARO SHIPPING LTD MALTA | | | SCAC4 |
| 3344 | KMNO | KAMINO OCEAN LINE | | | SCAC3 |
| 3345 | KMNO | KAMINO OCEAN LINE | | | SCAC4 |
| 3346 | KMNS | KUHN MOVING & STORAGE INC | | | SCAC4 |
| 3347 | KMNX | KaMin LLC | added 7/2008 | | NAKINA |
| 3348 | KMNX | KAMIN LLC | | | PWRC |
| 3349 | KMNX | KAMIN LLC | | | SCAC4 |
| 3350 | KMO | Ocean Airlines | IATA: 4O, | COM | AVCODES |
| 3351 | KMOH | KEELERS MOBILE HOME TRANSPORT | | | SCAC3 |
| 3352 | KMOL | KMO LEASING INC | | | SCAC4 |
| 3353 | KMOU | KAMYOO DEVELOPMENT HOLDING PTE. LTD. | | SGP | BIC |
| 3354 | KMOY | Keitele-Museo OY | | FI | VKM |
| 3355 | KMP | Kampuchea Airlines | IATA: KT, Callsign: Kampuchea, Designator KT recalled by IATA | K | AVCODES |
| 3356 | KMP | Kampuchea Airlines | IATA: E2, Callsign: Kampuchea, IATA Prefix: 837, Ceased operations 2004. Designator KT recalled by IATA | K | AVCODES |
| 3357 | KMP | Kampuchea Airlines | IATA: E2 | | ICAO1 |
| 3358 | KMPA | KEMP, A F TRUCKING | | | SCAC3 |
| 3359 | KMPB | KEMPER BROS | | | SCAC3 |
| 3360 | KMPB | KEMPER BROTHERS INC | | | SCAC4 |
| 3361 | KMPE | KEMP ENTERPRISES | | | SCAC4 |
| 3362 | KMPF | KEMP FURNITURE INDUSTRIES INC | | | SCAC3 |
| 3363 | KMPG | KEMPS GARAGE INC | | | SCAC3 |
| 3364 | KMPG | KAMA PIGMENTS | | | SCAC4 |
| 3365 | KMPM | KAMP MOVING & STORAGE | | | SCAC3 |
| 3366 | KMPN | KEMPTON TRANSPORT INC | | | SCAC3 |
| 3367 | KMPO | KEMP, JACK OIL CO INC | | | SCAC3 |
| 3368 | KMPP | KEMP TRANSPORTATION INC | | | SCAC3 |
| 3369 | KMPP | KEMPER EXPRESS INC | | | SCAC4 |
| 3370 | KMPR | KEMPER BROS | | | SCAC3 |
| 3371 | KMPS | KEMP SERVICES INC | | | SCAC3 |
| 3372 | KMPS | KAMPS GREENHOUSES INC | | | SCAC4 |
| 3373 | KMPT | KEMPEMA TRUCKING | | | SCAC3 |
| 3374 | KMPU | TANK ONE NV | | B | BIC |
| 3375 | KMPU | HILLDEEN SERVICES LIMITED | | | SCAC4 |
| 3376 | KMPY | KEMPNEY TRUCKING | | | SCAC3 |
| 3377 | KMPY | KEMPNEY TRUCKING LLC | | | SCAC4 |
| 3378 | KMQL | KIRSOM LOGISTICS LLC | | | SCAC4 |
| 3379 | KMR | Western Pacific Airlines, Inc. | IATA: W7, Callsign: Komstar, Ceased operations on 04 February 1998. | USA | AVCODES |
| 3380 | KMR | Western Pacific Airlines | | | ICAO1 |
| 3381 | KMRD | KIMRAD TRANSPORT LP | | | SCAC4 |
| 3382 | KMRI | KEMERI NAVIGATION CORP | | | SCAC3 |
| 3383 | KMRN | KOMPUTRANZ | | | SCAC3 |
| 3384 | KMRT | KEMIRO TRANSPORTATION SERVICE | | | SCAC4 |
| 3385 | KMRT | Kaohsiung Mass Rapid Transit | | RC | TRAFFIC |
| 3386 | KMRY | KETTLE MORAINE RAILWAY | | | PWRC |
| 3387 | KMRY | KIMREY TRUCKING INC | | | SCAC3 |
| 3388 | KMS | Silk Road Airline | Callsign: Silk Road, | KZ | AVCODES |
| 3389 | KMS | | City: Mettmann | D | TRAFFIC |
| 3390 | KMS | Kesälahden Maansiirto OY | | FI | VKM |
| 3391 | KMSA | KURZ-MORAN SHIPPING AGENCIES INC | | | SCAC3 |
| 3392 | KMSA | KYOCERA MEXICA | | | SCAC4 |
| 3393 | KMSC | KINNAMAN, MATTHEW SCOTT | | | SCAC4 |
| 3394 | KMSE | KEIRN MOTOR SPORT ENT INC | | | SCAC4 |
| 3395 | KMSG | KEMP MOVING & STORAGE INC | | | SCAC3 |
| 3396 | KMSK | KELLY MOBILE SERVICES INC | | | SCAC4 |
| 3397 | KMSM | K M S MOVING & STORAGE INC | | | SCAC3 |
| 3398 | KMSO | KINGS MOVING & STORAGE CO | | | SCAC3 |
| 3399 | KMSQ | KEY-MOTOR SPORTS INC | | | SCAC4 |
| 3400 | KMSU | YANG MING MARINE TRANSPORT CORP | | | SCAC4 |
