| 1 | KTS | Kotlas Air Enterprises, Federal State Unitary Enterprise | Callsign: Kotair, Name changed to Transair-Gyrantiee, Aircompany, Ojs Company | RUS | AVCODES |
| 2 | KTS | Kotlas Joint Civil Aviation Enterprise | Callsign: Kotlas Avia, | RUS | AVCODES |
| 3 | KTS | Transair-Gyrantiee, Aircompany, OJS Company | Callsign: Kotair, Name changed from Kotlas Air Enterprises, Federal State Unitary Enterprise | RUS | AVCODES |
| 4 | KTS | Transair-Gyraintiee | | | ICAO1 |
| 5 | KTSB | KENTUCKY TRANSPORT SYSTEM INC | | | SCAC4 |
| 6 | KTSC | KANE TRAFFIC SERVICES INC | | | SCAC4 |
| 7 | KTSD | KOSTIUCK TRANSPORTATION & SERVICES | | | SCAC3 |
| 8 | KTSD | KAHULUI TRUCKING & STORAGE INC | | | SCAC4 |
| 9 | KTSE | KEY TRANSPORTATION SERVICE INC | | | SCAC3 |
| 10 | KTSE | KTS | | | SCAC4 |
| 11 | KTSF | KAMINO TRANSPORTATION SERVICES INC | | | SCAC4 |
| 12 | KTSG | K T S LOGISTICS LLC | | | SCAC4 |
| 13 | KTSH | KT SERVICES INC | | | SCAC4 |
| 14 | KTSI | KROBLIN TRANSPORTATION SYSTEMS INC | | | SCAC3 |
| 15 | KTSI | KELLES TRANSPORT SERVICE INC | | | SCAC4 |
| 16 | KTSJ | KAJUN TREY SERVICE LLC | | | SCAC4 |
| 17 | KTSK | KEITHS TRANSPORT SERVICE LIMITED LI | | | SCAC4 |
| 18 | KTSL | KANO TRUCKING SERVICE LTD | | | SCAC3 |
| 19 | KTSL | KTS HEAVY HAULING INC | | | SCAC4 |
| 20 | KTSM | K TANKERING AND SHIPMANAGEMENT S A | | | SCAC4 |
| 21 | KTSN | KTS INC | | | SCAC3 |
| 22 | KTSO | KITSON TRANSPORT INC | | | SCAC4 |
| 23 | KTSP | KIEFS TRANSFER SPECIALISTS & INC | | | SCAC3 |
| 24 | KTSP | KING TRANSPORT SERVICES | | | SCAC4 |
| 25 | KTSR | KOHLER TRANSPORT SERVICE INC | | | SCAC3 |
| 26 | KTSR | KINNIN TRANSPORTATION SERVICES | | | SCAC4 |
| 27 | KTSS | KELMAN TRANSPORTATION SERVICES INC | | | SCAC3 |
| 28 | KTST | KTS TRUCK LINES INC | | | SCAC3 |
| 29 | KTST | K & T SWITCHING SERVICE INC | | | SCAC4 |
| 30 | KTSU | KTZ EXPRESS JSC | | KZ | BIC |
| 31 | KTSU | JOINT STOCK COMPANY KAZTRANSSERVIC | | | SCAC4 |
| 32 | KTSV | KOURIER TRANSPORT SERVICE | | | SCAC3 |
