| 1 | ZE | Cosmos Air Luftfahrtunternehmen GmbH | ICAO: AZE, Callsign: Arcus Air, Name changed to Arcus Air Logistic GmbH | D | AVCODES |
| 2 | ZE | Lineas Aereas Azteca, S.A. de C.V. | ICAO: LCD, Callsign: Lineas Azteca, IATA Prefix: 994, Operations suspended by the government in March 2007. AOC cancelled in October 2007. | MEX | AVCODES |
| 3 | ZE | Arcus Air Logistic GmbH | ICAO: AZE, Callsign: Arcus Air, Name changed from Cosmos Air Luftfahrtunternehmen GmbH | D | AVCODES |
| 4 | ZE | Eastar Jet Co. Ltd. | ICAO: ESR, Callsign: Eastarjet, | ROK | AVCODES |
| 5 | ZEC | Zespół Elektrociepłowni Bydgoszcz S.A. | | PL | VKM |
| 6 | ZECN | ZEN CONTINENTAL CO., INC. | | | SCAC4 |
| 7 | ZECS | ZDS EXPRESS COURIERS | | | SCAC4 |
| 8 | ZEEL | ZEELAND FARM SERVICES INC | | | SCAC4 |
| 9 | ZEEN | ZEENA TRANSPORT INC | | | SCAC4 |
| 10 | ZEEU | ZEENNI S TRADING AGENCY | | RL | BIC |
| 11 | ZEFB | ZERO EIGHT FOUR FOUR ZERO FIVE FOUR | | | SCAC4 |
| 12 | ZEFL | ZENITH FREIGHT LINES LLC | | | SCAC4 |
| 13 | ZEKE | ZEKE UNLIMITED INC | | | SCAC4 |
| 14 | ZEKY | ZIP EXPRESS | | | SCAC4 |
| 15 | ZELI | ZEAL EXPRESS LOGISTICS INC | | | SCAC4 |
| 16 | ZELL | ZELLER, W TRANSPORTATION LTD | | | SCAC4 |
| 17 | ZELM | ZELLMER TRUCK LINES, INC | | | SCAC1 |
| 18 | ZELM | ZELLMER TRUCK LINES | | | SCAC4 |
| 19 | ZELPO | Železiarne Podbrezová a.s. | | SK | VKM |
| 20 | ZELPR | Železničná preprava, a.s. | | SK | VKM |
| 21 | ZELR | ZELLER TRANSPORTATION LLC | | | SCAC4 |
| 22 | ZELSD | Železara Smederevo d.o.o. | | RS | VKM |
| 23 | ZENC | ZEN CONTINENTAL CO INC | | | SCAC4 |
| 24 | ZENT | ZENITH TRANSPORT (1982) INC | | | SCAC4 |
| 25 | ZENTAN | Zentan Bus | | J | TRAFFIC |
| 26 | ZENU | ZEN BOX CO.,LTD | | USA | BIC |
| 27 | ZENU | ZENDE CONTAINER LEASING LIMITED | | | SCAC4 |
| 28 | ZEPHI | ZEPHIR S.p.A. | | IT | VKM |
| 29 | ZEPN | ZEPPELIN EXPRESS TRUCKING | | | SCAC4 |
| 30 | ZEPQ | ZEP TRANSPORTS INC | | | SCAC4 |
| 31 | ZERB | ZERBE BROTHERS INC | | | SCAC4 |
| 32 | ZERE | Zeretzke-Reisen | City: Dortmund | D | TRAFFIC |
| 33 | ZET | Zircon Express Togo | | TG | AVCODES |
| 34 | ZET | Zagreb Electric Tram | City: Zagreb | HR | TRAFFIC |
| 35 | ZETA | ZETA SYSTEM SRL | | | SCAC4 |
| 36 | ZETI | ZE TRANS INC | | | SCAC4 |
| 37 | ZETM | Z EXPRESS TRUCKING INC | | | SCAC4 |
| 38 | ZETT | ZERO EIGHT TWO ZERO TWO SEVEN SIX ( | | | SCAC4 |
| 39 | ZETU | ZETA SYSTEM SPA | | I | BIC |
| 40 | ZEUR | ZEUS TRANSPORT LLC | | | SCAC4 |
| 41 | ZEUS | ZEUS NAVIGATION COMPANY LIMITED | | | SCAC4 |
| 42 | ZEXI | ZAPIT EXPRESS INC | | | SCAC4 |
| 43 | ZEXL | ZOOM EXPRESS LLC | | | SCAC4 |
| 44 | ZEZF | ZERO EIGHT ZERO FIVE ONE TWO THREE | | | SCAC4 |
