| 1 | KI | Canadian Regional Airlines (1998) Ltd. | ICAO: CDR, Callsign: Canadian Regional, Merged into Air Canada Jazz | CDN | AVCODES |
| 2 | KI | Skyway Enterprises, Inc. | ICAO: SKZ, Callsign: Skyway-Inc, Designator KI* recalled by IATA. Designator KI* reinstated by IATA | USA | AVCODES |
| 3 | KI | Time Air, Inc. | ICAO: TAF, Callsign: Time Air, Canadian Partner | CDN | AVCODES |
| 4 | KI | Air Atlantique / Air Publicité | ICAO: APB, Callsign: Charente, Designator KI recalled by IATA | F | AVCODES |
| 5 | KI | Trabajos Aéreos del Sahara, S.A. | ICAO: TGE, Callsign: Tasa, | E | AVCODES |
| 6 | KI | Contactair Flugdienst and Co. | ICAO: KIS, Callsign: Contactair, Designator KI recalled by IATA | D | AVCODES |
| 7 | KI | Adam SkyConnection Airlines PT | ICAO: DHI, Callsign: Adam Sky, AOC suspended on 18 March 2008. | RI | AVCODES |
| 8 | KI | Aviatrans K Ltd, Air Company | ICAO: KCA, Callsign: Trans Kiev, Name changed from Trans-Kiev. | UA | AVCODES |
| 9 | KI | KaiserAir, Inc. | ICAO: KAI, Callsign: Kaiser, Designator KI recalled by IATA | USA | AVCODES |
| 10 | KI | Krasavia, State Enterprise of Krasnoyarsk Territory | ICAO: SSJ, Callsign: Siberian Sky, Designator KI recalled by IATA. Founded in 1956 as part of Aeroflot. Became independent in 1992. | RUS | AVCODES |
| 11 | KI | SKS Airways Sdn Bhd. | ICAO: SJB, Callsign: Southern Tiger, | MAL | AVCODES |
| 12 | KI | Kockums Industrier AB | | SE | VKM |
| 13 | KIA | Kiwi International Air Lines | IATA: KP, Callsign: Kiwi Air, IATA Prefix: 538, Ceased operations | USA | AVCODES |
| 14 | KIA | Inter City Air | Callsign: Intercity, | USA | AVCODES |
| 15 | KIA | Kiwi International Air Lines | IATA: KP | | ICAO1 |
| 16 | KIAF | KING, GEORGE W TRUCKING | | | SCAC4 |
| 17 | KIAP | KIA SHIPPING (BVI) LIMITED | | | SCAC4 |
| 18 | KIAT | KIRSCH TRANSPORTATION SERVICES INC | | | SCAC4 |
| 19 | KIBC | KIRCHWEHM BROS CARTAGE CO INC | | | SCAC3 |
| 20 | KIBE | KRISCAS CO | | | SCAC4 |
| 21 | KIBI | K-I-B INTERSTATE TRANSPORTATION INC | | | SCAC3 |
| 22 | KIBI | KRAZY K INC | | | SCAC4 |
| 23 | KIBJ | KIRK, B J TRANSPORTATION CO | | | SCAC3 |
| 24 | KIBL | KILLIAN BULK TRANSPORT INC | | | SCAC3 |
| 25 | KIBM | KIBBEE, MELVIN E | | | SCAC3 |
| 26 | KIBO | KBT INC | | | SCAC3 |
| 27 | KIBO | KBT INC | | | SCAC4 |
| 28 | KIBS | KIEBLER & SONS TRUCKING | | | SCAC3 |
| 29 | KIBV | KIMBALL & BROWN MOVING & STORAGE CO | | | SCAC3 |
| 30 | KIBY | KIRBERY TRANSPORTATION, INC | | | SCAC3 |
| 31 | KIBY | KING JAMES LLC | | | SCAC4 |
| 32 | KIC | Kiwi Travel International Airlines | IATA: KC, Callsign: Kaytac, Ceased operations | NZ | AVCODES |
| 33 | KICA | KING, CLARENCE CARTAGE | | | SCAC3 |
| 34 | KICA | KITE SHIPPING LLC | | | SCAC4 |
| 35 | KICC | KING CARTAGE CO INC | | | SCAC3 |
| 36 | KICEO | Compagnie des transports Golfe du Morbihan - Vannes Agglomération | City: Vannes | F | TRAFFIC |
| 37 | KICF | KINCAID FURNITURE CO INC | | | SCAC3 |
| 38 | KICG | KING CARRIAGE COMPANY | | | SCAC3 |
| 39 | KICI | KERTON INDUSTRIAL CONTRACTORS INC | | | SCAC4 |
| 40 | KICN | KIT CONSTRUCTION CO | | | SCAC3 |
| 41 | KICO | KIRCHNER & CO. | | | PWRC |
| 42 | KICO | KINSELLA CONSTRUCTION CO | | | SCAC3 |
| 43 | KICO | KINSELLA CONSTRUCTION CO | | | SCAC4 |
| 44 | KICS | KINGS CHARTER SERVICE | | | SCAC3 |
| 45 | KICT | KING, I C TRUCKING INC | | | SCAC3 |
| 46 | KIDE | KIDDY ENTERPRISES INC | | | SCAC3 |
| 47 | KIDE | KIDD, ERIC TRUCKING | | | SCAC4 |
| 48 | KIDG | KID GLOVES SERVICE INC | | | SCAC3 |
| 49 | KIDG | KID GLOVES SERVICE INC | | | SCAC4 |
| 50 | KIDI | KIDD & COMPANY INC | | | SCAC3 |
| 51 | KIDJ | KING, D J, INCORPORATED | | | SCAC3 |
| 52 | KIDK | KIDD, MACK TRUCKING COMPANY | | | SCAC3 |
| 53 | KIDL | KIDD OIL CO INC | | | SCAC4 |
| 54 | KIDM | KINDER MOVING & STORAGE INC | | | SCAC3 |
| 55 | KIDM | KNIGHT INDUSTRIAL DE MEXICO S DE RL | | | SCAC4 |
| 56 | KIDN | KIDD TRUCKING | | | SCAC3 |
| 57 | KIDO | KIDD, JOHN MICHAEL | | | SCAC3 |
| 58 | KIDQ | KIDCO TRUCKING | | | SCAC3 |
| 59 | KIDR | KIDDER, JIM TRUCKING | | | SCAC3 |
| 60 | KIDS | KIDS R US | | | SCAC3 |
| 61 | KIDW | KIDD, W L OIL FIELD SERVICE INC | | | SCAC3 |
| 62 | KIDY | KINDERSLEY TRANSPORT, LTD | | | SCAC3 |
| 63 | KIDY | KINDERSLEY TRANSPORT LTD | | | SCAC4 |
| 64 | KIE | Afit GmbH | Callsign: Tweety, | D | AVCODES |
| 65 | KIE | Afit | | | ICAO1 |
| 66 | KIEC | K & I EXPRESS INC | | | SCAC4 |
| 67 | KIEE | KIESLER EXPRESS INC | | | SCAC3 |
| 68 | KIEH | KIELSTRA, HENRY | | | SCAC4 |
| 69 | KIEL | Kieler Verkehrsgesellschaft | Real: KVG, City: Kiel | D | TRAFFIC |
| 70 | KIEL | Seehafen Kiel | | DE | VKM |
| 71 | KIELCE | MPK Kielce | | PL | TRAFFIC |
| 72 | KIEN | KINNIE TRANSPORTATION GROUP INC | | | SCAC4 |
| 73 | KIER | KIER TRUCKING CO | | | SCAC3 |
| 74 | KIER | KIERA, R D INCORPORATED | | | SCAC4 |
| 75 | KIES | KIESEL COMPANY, THE | | | SCAC4 |
| 76 | KIEU | KINECTRICS GMBH | | GB | BIC |
| 77 | KIEV | Kievpastrans | City: Kiev | UA | TRAFFIC |
| 78 | KIEW | KIESWETTER, CARL | | | SCAC4 |
| 79 | KIEY | KINNEY TRUCK LINE INC | | | SCAC3 |
| 80 | KIFC | KATANOS INTERNATIONAL FREIGHT LLC | | | SCAC4 |
| 81 | KIFK | KINGDON, FRANK TRUCKING | | | SCAC3 |
| 82 | KIFL | KINGSWAY FREIGHTLINES, LIMITED | | | SCAC3 |
| 83 | KIFR | KIEFFER, RONALD L | | | SCAC3 |
| 84 | KIFT | KINDRED FARMS TRUCKING | | | SCAC3 |
| 85 | KIFT | KINDRED FARMS TRUCKING | | | SCAC4 |
| 86 | KIGB | KING BRESLIN TRUCKING, INC | | | SCAC3 |
| 87 | KIGB | KING BRESLIN TRUCKING INC | | | SCAC4 |
| 88 | KIGC | KINGS COUNTY TRUCK LINE | | | SCAC3 |
| 89 | KIGD | KINGDOM SHIPPING LIMITED | | | SCAC4 |
| 90 | KIGE | KINGS EXPRESS INC | | | SCAC3 |
| 91 | KIGE | KINGS EXPRESS INC | | | SCAC4 |
| 92 | KIGJ | KISHIDA, GEORGE JR | | | SCAC3 |
| 93 | KIGP | KINGS TRANSPORT INC | | | SCAC3 |
| 94 | KIGU | KEN INDUSTRIAL GASES PTE LTD | | SGP | BIC |
| 95 | KIGU | KEN INDUSTRIAL GASES PTE LTD | | | SCAC4 |
| 96 | KIGW | KINGSWAY LOGISTICS CORP | | | SCAC4 |
| 97 | KIHM | KIES, HARRY M, W | | | SCAC3 |
| 98 | KIHQ | KISHIDA, GEORGE | | | SCAC3 |
| 99 | KII | Kalitta Charters II, LLC | IATA: K5, Callsign: Dragster, | USA | AVCODES |
| 100 | KIIC | KLEEGE INDUSTRIES INC | | | SCAC4 |
