| 3401 | KMSV | KHASE MANUFACTURING SA DE CV | | | SCAC4 |
| 3402 | KMSY | K M S STEAM SUPPLY INC | | | SCAC4 |
| 3403 | KMSZCZ | Komunikacja Miejska sp. z o.o. w Szczecinku | | PL | TRAFFIC |
| 3404 | KMTA | K M TRANSPORTATION CO INC | | | SCAC4 |
| 3405 | KMTB | KIMS TRANSPORTATION INC | | | SCAC3 |
| 3406 | KMTC | KOREA MARINE TRANSPORT CO.,LTD. | | | PWRC |
| 3407 | KMTC | K & M TRUCKING COMPANY | | | SCAC3 |
| 3408 | KMTD | K & M TRUCKING LTD | | | SCAC3 |
| 3409 | KMTF | KELRON MONTREAL (TCL) INC | | | SCAC4 |
| 3410 | KMTI | KERRICHER, MAC TRUCKING | | | SCAC3 |
| 3411 | KMTI | KVAMME TRUCKING | | | SCAC4 |
| 3412 | KMTJ | K M K TRANSPORT INC | | | SCAC3 |
| 3413 | KMTK | K & M TIRE & TRUCKING | | | SCAC4 |
| 3414 | KMTM | KIM TAM TRUCK LEASING LTD | | | SCAC4 |
| 3415 | KMTN | KELLER, MARVIN TRUCKING | | | SCAC3 |
| 3416 | KMTN | KELLER, MARVIN TRUCKING INC | | | SCAC4 |
| 3417 | KMTO | K & M TRANSPORT | | | SCAC3 |
| 3418 | KMTP | KEIM TRANSPORTATION INC | | | SCAC3 |
| 3419 | KMTQ | K-MAC TRUCKING INC | | | SCAC4 |
| 3420 | KMTR | K & M TRANSPORTATION | | | SCAC3 |
| 3421 | KMTR | KM TRANSPORT | | | SCAC4 |
| 3422 | KMTS | KEMIRA LOGISTICS INC | | | SCAC4 |
| 3423 | KMTT | K-M TRANSPORTATION CO | | | SCAC3 |
| 3424 | KMTU | KOREA MARINE TRANSPORT CO / E. C. TEAM | | ROK | BIC |
| 3425 | KMTU | HYUNDAI MERCHANT MARINE (AMERICA), INC. | | | PWRC |
| 3426 | KMTU | Hyundai Merchant Marine | | | RSRV |
| 3427 | KMTU | KOREA MARINE TRANSPORT CO., LTD | | | SCAC3 |
| 3428 | KMTU | KOREA MARINE TRANSPORT CO/E C TEAM | | | SCAC4 |
| 3429 | KMTV | KMTL ENTERPRISES LLC | | | SCAC4 |
| 3430 | KMTW | K & M TRUCKING INC | | | SCAC4 |
| 3431 | KMTX | KINDER MORGAN PETCOKE, LP | | | PWRC |
| 3432 | KMTX | Kinder Morgan | | | RSRV |
| 3433 | KMTX | KINDER MORGAN PETCOKE LP | | | SCAC4 |
| 3434 | KMTY | K & M TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 3435 | KMTZ | HYUNDAI MERCHANT MARINE (AMERICA), INC. | | | PWRC |
| 3436 | KMTZ | Hyundai Merchant Marine | | | RSRV |
| 3437 | KMTZ | HYUNDAI MERCHANT MARINE (AMERICA) I | | | SCAC4 |
| 3438 | KMUL | KMULGEE EXPRESS INC | | | SCAC3 |
| 3439 | KMUX | Kershaw Manufacting Co. | 1/1994-7/2005 (not listed) | | NAKINA |
| 3440 | KMUX | Kershaw Manufacting Co. | 1/94-7/2000 | | NRHS |
| 3441 | KMUX | KERSHAW MANUFACTURING COMPANY | | | PWRC |
| 3442 | KMUX | Kershaw Manufacturing | | | RSRV |
| 3443 | KMUX | KERSHAW MANUFACTURING COMPANY | | | SCAC4 |
| 3444 | KMV | Joint-Stock Company Komiinteravia | IATA: 8J, Callsign: Komiinter, Name changed to Komiinteravia Joint-Stock Company | RUS | AVCODES |
| 3445 | KMV | Komiinteravia Joint-Stock Company | IATA: 8J, Callsign: Komiinter, Name changed from Joint-Stock Company Komiinteravia. Founded in March 1996 | RUS | AVCODES |
| 3446 | KMV | Komiinteravia | IATA: 8J | | ICAO1 |
| 3447 | KMVG | KINGS MOVING & STORAGE CO | | | SCAC3 |
| 3448 | KMVL | KINGS MOVING LLC | | | SCAC4 |
| 3449 | KMVS | KEY MOVING & STORAGE INC | | | SCAC4 |
| 3450 | KMVU | OOO DALEEXPRESS | | | SCAC4 |
| 3451 | KMW | Kostroma Air Enterprise | Callsign: Kostroma, | RUS | AVCODES |
| 3452 | KMWS | KENWOODS MOVING & STORAGE INC | | | SCAC3 |
| 3453 | KMWX | KMW Locomotive Leasing, LLC | added 4/2009 | | NAKINA |
| 3454 | KMWX | KMW LOCOMOTIVE LEASING LLC | | | SCAC4 |
| 3455 | KMWZ | KENMORE WAREHOUSE | | | PWRC |
| 3456 | KMX | Kiampex, Association | Callsign: Kiampex, Ceased operations. | UA | AVCODES |
| 3457 | KMXC | K & M TRANSPORT LLC | | | SCAC4 |
| 3458 | KMXG | KAMPS | | | SCAC4 |
| 3459 | KMXI | KMX INTERNATIONAL | | | SCAC3 |
| 3460 | KMXL | KMX LOGISTICS INC | | | SCAC4 |
| 3461 | KMXM | KWIK MIX MATERIALS LTD | | | SCAC4 |
| 3462 | KMXN | KAM TRANS INC | | | SCAC4 |
| 3463 | KMXO | KRAMER TRANSPORT | | | SCAC4 |
| 3464 | KMXP | KENMAR EXPRESS INC | | | SCAC4 |
| 3465 | KMXR | K & M EXPRESS INC | | | SCAC4 |
| 3466 | KMXS | KOHLER MIX SPECIALTIES | | | SCAC3 |
| 3467 | KMXS | KYOMEX S A DE C V | | | SCAC4 |
| 3468 | KMXS | | Real: NVK, City: Karl-Marx Stadt (Chemnitz) | DDR | TRAFFIC |
| 3469 | KMZ | Comores Aviation | IATA: KR, | COM | AVCODES |
| 3470 | KMZ | Comores Aviation International | IATA: O5, | COM | AVCODES |
| 3471 | KMZ | KERR MCGEE | | | PWRC |
| 3472 | KN | Nantay Pty Ltd., d/b/a Maroomba Airlines | | AUS | AVCODES |
| 3473 | KN | China United Airlines Co., Ltd. | ICAO: CUA, Callsign: Lianhang, ICAO Callsign changed to China United. Designator KN reinstated by IATA. | PRC | AVCODES |
| 3474 | KN | Morris Air Service | ICAO: MSS, Callsign: Wasatch, Founded in 1984. Merged into Southwest Airlines in 1994. | USA | AVCODES |
| 3475 | KN | Kelowna Flightcraft International Air Cargo Ltd. d/b/a Winnport Air Cargo | ICAO: KFA, Callsign: Flightcraft, IATA designator changed to W8 | CDN | AVCODES |
| 3476 | KN | GKN Group Services Ltd. | ICAO: GKN, Callsign: Guest Keen, | GB | AVCODES |
| 3477 | KN | China United Airlines Co., Ltd. | ICAO: CUA, Callsign: China United, ICAO Callsign changed from Lianhang. Designator KN reinstated by IATA. | PRC | AVCODES |
| 3478 | KN | Kurt Nitzer GmbH&Co. KG | | DE | VKM |
| 3479 | KNA | Knight Air Ltd. | Callsign: Knightair, | GB | AVCODES |
| 3480 | KNA | Kuwait National Airways (K.C.S.) | IATA: KW, Name changed to Wataniya Airways | KWT | AVCODES |
| 3481 | KNA | Kunming Airlines Co., Ltd. | IATA: KY, Callsign: Kunming Air, IATA Prefix: 833, | PRC | AVCODES |
| 3482 | KNA | Knight Air | | | ICAO1 |
| 3483 | KNAA | KNAACK DRAY LINE | | | SCAC3 |
| 3484 | KNAA | KNIGHT TRANSPORT | | | SCAC4 |
| 3485 | KNAB | K&N TRANSPORT LTD | | | SCAC4 |
| 3486 | KNAC | KEENAN CORP, THE | | | SCAC4 |
| 3487 | KNAF | KENWORTHY AIR FREIGHT SERVICES INC | | | SCAC3 |
| 3488 | KNAG | K & A TRUCKING | | | SCAC3 |
| 3489 | KNAI | KING AIR INC | | | SCAC3 |
| 3490 | KNAI | KERR, JAMES TRUCKING | | | SCAC4 |
| 3491 | KNAK | KNAACK MANUFACTURING CO | | | SCAC3 |
| 3492 | KNAK | KNAACK MANUFACTURING CO | | | SCAC4 |
| 3493 | KNAL | K & A LEASING COMPANY INC | | | SCAC3 |
| 3494 | KNAL | KANALCO LIMITED | | | SCAC4 |
| 3495 | KNAM | KERSHNER TRUCKING INC | | | SCAC4 |
| 3496 | KNAN | KONAN EXPRESS INC | | | SCAC4 |
| 3497 | KNAO | KANE AUTO TRANSPORT INC | | | SCAC3 |
| 3498 | KNAP | KNAPP, ROBERT E | | | SCAC3 |
| 3499 | KNAPE | GSG Knape / Max Knape | | D | TRAFFIC |
| 3500 | KNAQ | KANAWAH CARTAGE COMPANY | | | SCAC3 |
