| 1601 | KESO | KANGAROO EXPRESS OF SOUTHERN COLORA | | | SCAC4 |
| 1602 | KESP | KEYSTONE TRANSPORTATION | | | SCAC4 |
| 1603 | KESQ | KEYSTONE LAWRENCE EXPRESS, INC | | | SCAC3 |
| 1604 | KESS | KESSLER TRUCKING LLC | | | SCAC4 |
| 1605 | KEST | KESSELL TRANSFER & STORAGE CO INC | | | SCAC3 |
| 1606 | KEST | KATIES LTD | | | SCAC4 |
| 1607 | KESV | KEY LIMOUSINE SERVICE | | | SCAC3 |
| 1608 | KESW | KENNESAW TRANSPORTATION INC | | | SCAC3 |
| 1609 | KESW | KENNESAW TRANSPORTATION INC | | | SCAC4 |
| 1610 | KET | Cat Kargo Hava Tasima A.S. | Callsign: Cat Kargo, | TR | AVCODES |
| 1611 | KETA | K & E TRUCKING | | | SCAC4 |
| 1612 | KETB | KELLY TRUCKING | | | SCAC3 |
| 1613 | KETC | KEALY TRUCKING CO | | | SCAC3 |
| 1614 | KETD | KENT, DARREN, TRUCKING COMPANY | | | SCAC3 |
| 1615 | KETD | KESSLER, ERNIE TRUCKING | | | SCAC4 |
| 1616 | KETG | KEITH TRUCKING INC | | | SCAC3 |
| 1617 | KETG | KENT TRUCKING INC | | | SCAC4 |
| 1618 | KETH | KEITH, HAROLD | | | SCAC3 |
| 1619 | KETI | KEYSTONE TRUCKING SERVICE INC | | | SCAC3 |
| 1620 | KETI | KELDORN TRUCKING INC | | | SCAC4 |
| 1621 | KETJ | KENYON TRUCKING INC | | | SCAC3 |
| 1622 | KETK | KEETON TRUCKING | | | SCAC4 |
| 1623 | KETM | KETTERING MOVING & STORAGE INC | | | SCAC3 |
| 1624 | KETM | KETTERING MOVING & STORAGE INC | | | SCAC4 |
| 1625 | KETO | KIMBALL, E G TRUCKING | | | SCAC3 |
| 1626 | KETP | KEES TRANSPORTATION | | | SCAC3 |
| 1627 | KETP | K & E TRANSPORT | | | SCAC4 |
| 1628 | KETQ | KETON TRANSFER & STORAGE COMPANY IN | | | SCAC3 |
| 1629 | KETR | KENS TRANSFER | | | SCAC3 |
| 1630 | KETR | KENS TRANSFER INC | | | SCAC4 |
| 1631 | KETS | KENTS TRANSPORT LTD | | | SCAC3 |
| 1632 | KETS | KETT COSMETICS | | | SCAC4 |
| 1633 | KETT | KEATING TRUCK LINE | | | SCAC3 |
| 1634 | KETT | Ketton Cement | Real: TLG | GB | TRAFFIC |
| 1635 | KETW | KENS TRUCKING | | | SCAC3 |
| 1636 | KETY | KELTRAN INC | | | SCAC3 |
| 1637 | KETY | Miedzygminny Zaklad Komunikacyjny w Ketach | Real: MZK | PL | TRAFFIC |
| 1638 | KEUC | KEROUAC, DONALD | | | SCAC3 |
| 1639 | KEUG | KEUTZER, GEORGE | | | SCAC3 |
| 1640 | KEUS | KOREA EXPRESS USA INC | | | SCAC4 |
| 1641 | KEVAG | Koblenzer Elektrizitätswerk und Verkehrs-AG | City: Koblenz | D | TRAFFIC |
| 1642 | KEVI | KEVINS TRUCKS | | | SCAC4 |
| 1643 | KEVQ | K E VAS CO | | | SCAC3 |
| 1644 | KEW | Keewatin Air Ltd. | IATA: FK, Callsign: Blizzard, Designator FK* recalled by IATA. IATA designator changed from 6K. Founded in 1998. in 1998. | CDN | AVCODES |
| 1645 | KEW | Keewatin Air Ltd. | IATA: 6K, Callsign: Blizzard, IATA designator changed to FK*. Founded in 1998. in 1998. | CDN | AVCODES |
| 1646 | KEW | Keewatin Air Ltd. | Callsign: Blizzard, Designator FK* recalled by IATA. IATA designator changed from 6K. Founded in 1998. in 1998. | CDN | AVCODES |
| 1647 | KEWA | KELLY, W A | | | SCAC3 |
| 1648 | KEWA | KEWA GAS TRANSPORT | | | SCAC4 |
| 1649 | KEWC | KELLER, WALTER C AND SON | | | SCAC3 |
| 1650 | KEWD | KENWOODS MOVING & STORAGE LTD | | | SCAC3 |
| 1651 | KEWH | KEWASH RAILROID | | | PWRC |
| 1652 | KEWH | Kewash Railroad | | | RSRV |
| 1653 | KEWI | KERSEY, EARL W TRUCKING INC | | | SCAC3 |
| 1654 | KEWK | KENNEWICK TRANSFER & STORAGE INC | | | SCAC3 |
| 1655 | KEWK | KENNEWICK TRANSFER & STORAGE INC | | | SCAC4 |
| 1656 | KEWL | KETCHAM, W E LINES CO | | | SCAC3 |
| 1657 | KEWM | KENWOOD MOVING & STORAGE | | | SCAC3 |
| 1658 | KEWQ | KEDNEY WAREHOUSE COMPANY | | | SCAC3 |
| 1659 | KEWR | KELWORTH TRUCKING COMPANY INC | | | SCAC3 |
| 1660 | KEWS | KEY WAREHOUSE SERVICES INC | | | SCAC3 |
| 1661 | KEX | Kingtan Extract Co. | 7/1930 | | NAKINA |
| 1662 | KEX | KINGTAN EXTRACT CO. | | | PWRC |
| 1663 | KEXC | KOOL EXPRESS LLC | | | SCAC4 |
| 1664 | KEXD | KAMMS EXPEDITING | | | SCAC4 |
| 1665 | KEXE | KOOIMAN EXPRESS | | | SCAC4 |
| 1666 | KEXG | KINGS EXPRESS | | | SCAC4 |
| 1667 | KEXI | KNAPP EXCAVATORS INC | | | SCAC3 |
| 1668 | KEXK | KODIAK EXPRESS | | | SCAC4 |
| 1669 | KEXL | KEYSTONE EXCAVATING & LANDFILL CO | | | SCAC3 |
| 1670 | KEXO | KING EXPORT | | | SCAC3 |
| 1671 | KEXQ | KAMS EXPRESS | | | SCAC3 |
| 1672 | KEXQ | KAT EXCAVATION INC | | | SCAC4 |
| 1673 | KEXU | KINGSHOLMS | | | SCAC3 |
| 1674 | KEXW | KHALSA EXPRESS | | | SCAC4 |
| 1675 | KEY | Key Airlines | Callsign: Key Air, Name changed to Key Air, LLC. | USA | AVCODES |
| 1676 | KEY | Key Air, LLC. | Callsign: Key Air, Name changed from Key Airlines. | USA | AVCODES |
| 1677 | KEY | Key Airlines | | | ICAO1 |
| 1678 | KEYA | K-E-Y INTERNATIONAL | | | SCAC4 |
| 1679 | KEYB | KEYBOARD CARRIAGE, INC | | | SCAC3 |
| 1680 | KEYB | KEYBOARD CARRIAGE INC | | | SCAC4 |
| 1681 | KEYC | KEY CITY TRANSFER & REFRIGERATOR LI | | | SCAC3 |
| 1682 | KEYD | KEY DISTRIBUTORS INC | | | SCAC4 |
| 1683 | KEYE | KEYCO MOTOR FREIGHT INC | | | SCAC3 |
| 1684 | KEYH | KEYHOLE RANCH | | | SCAC4 |
| 1685 | KEYJ | KEY TRANSPORTATION INC | | | SCAC3 |
| 1686 | KEYK | KEYSTONE LINES BROKERAGE DIVISION | | | SCAC4 |
| 1687 | KEYL | KEYSTONE LINES | | | SCAC3 |
| 1688 | KEYL | KEYSTONE LINES | | | SCAC4 |
| 1689 | KEYM | KEYMARK CORPORATION | | | SCAC3 |
| 1690 | KEYO | KEY MOBILE HOMES | | | SCAC3 |
| 1691 | KEYQ | KEYSTONE TERMINALS INC | | | SCAC3 |
| 1692 | KEYQ | KEY AGVENTURES INC | | | SCAC4 |
| 1693 | KEYR | KEY MOVING STORAGE | | | SCAC3 |
| 1694 | KEYS | KEYSTOPS LLC | | | SCAC4 |
| 1695 | KEYS | Key System | | US-CA | TRAFFIC |
| 1696 | KEYT | KEY TRANSPORTATION INC | | | SCAC4 |
| 1697 | KEYU | FASTGROW / KEYUN GROUP | | PRC | BIC |
| 1698 | KEYU | GOLD PRIME HOLDINGS LIMITED | | | SCAC4 |
| 1699 | KEYV | KEYSTONE SHIPPING COMPANY | | | SCAC3 |
| 1700 | KEYV | KEYSTONE SHIPPING CO | | | SCAC4 |
