| 1 | JZ | Japan Air Charter Co. Ltd. | IATA designator changed to JO | J | AVCODES |
| 2 | JZ | Skyways Express AB | ICAO: SKX, Callsign: Sky Express, IATA Prefix: 752, Ceased Operations and filed for Bankrupcy on 12 May 2012. Name changed to Avia Express Sweden AB. Name changed from Skyways AB | S | AVCODES |
| 3 | JZ | Japan Air Charter Co. Ltd. | IATA designator changed to JO | J | AVCODES |
| 4 | JZ | JALWays Co. Ltd. | ICAO: JAZ, IATA Prefix: 708, IATA designator changed to JO | J | AVCODES |
| 5 | JZ | Skyways AB | ICAO: SKX, Callsign: Sky Express, IATA Prefix: 752, Name changed to Skyways Express AB | S | AVCODES |
| 6 | JZ | Aeronaves del Centro, S.A. | | MEX | AVCODES |
| 7 | JZ | Zaire Aero Service (ZAS) | ICAO: ZAI, Callsign: Juliette Zulu, ICAO callsign changed to Zasair | ZAR | AVCODES |
| 8 | JZ | Zaire Aero Service (ZAS) | ICAO: ZAI, Callsign: Zasair, ICAO callsign changed from Juliette Zulu | ZAR | AVCODES |
| 9 | JZ | Avia Express Sweden AB | ICAO: SKX, IATA Prefix: 752, Ceased operations on 22 May 2012. Name changed from Skyways Express AB w.e.f. 01 December 2010. Name changed to Skyways AB | S | AVCODES |
| 10 | JZ | PT. Jatayu Gelang Sejahtera | ICAO: JTY, Callsign: Jatayu, | RI | AVCODES |
| 11 | JZ | Jubba Airways (K) Limited | ICAO: JBW, Callsign: Airjub, Designator 6J recalled by IATA | EAK | AVCODES |
| 12 | JZ | jetSMART Airlines Peru SAC | ICAO: JAP, Callsign: Red Smart, | PE | AVCODES |
| 13 | JZ | Jugoslovenske železnice | | YU | TRAFFIC |
| 14 | JZA | Air Canada Jazz | IATA: QK, Callsign: Jazz, ICAO designator changed from JZZ. Name changed from Air Canada Regional Inc. ICAO designator changed from ARN. ICAO callsign changed from Transcan. | CDN | AVCODES |
| 15 | JZA | Jazz Aviation LP | IATA: QK, Callsign: Jazz, Name changed from Air Canada Jazz. ICAO designator changed from JZZ. Name changed from Air Canada Regional Inc. ICAO designator changed from ARN. ICAO callsign changed from Transcan. | CDN | AVCODES |
| 16 | JZA | Air Canada Jazz | IATA: QK | | ICAO1 |
| 17 | JZBK | JARZOMBEK, C & R INC | | | SCAC4 |
| 18 | JZDR | JIMENEZ, DISMAR | | | SCAC4 |
| 19 | JZFR | J Z FREIGHT BROKERAGE | | | SCAC4 |
| 20 | JZJV | JUAREZ, JAVIER | | | SCAC4 |
| 21 | JZLO | JZ LOGISTICS LLC | | | SCAC4 |
| 22 | JZNU | A.J JONGENEEL EN ZONEN TRANSPORT B.V | | NL | BIC |
| 23 | JZNU | A J JONGENEEL & ZN TRANSPORT BV | | | SCAC4 |
| 24 | JZPU | JINZHOU PORT CO.,LTD. | | PRC | BIC |
| 25 | JZR | Jazeera Airways | IATA: J9, Callsign: Jazeera, Designator J9* reinstated by IATA | KWT | AVCODES |
| 26 | JZR | Jazeera Airways | IATA: J9 | | ICAO1 |
| 27 | JZTI | JUAREZ TRUCKING | | | SCAC4 |
| 28 | JZTL | JZ TRUCKING LLC | | | SCAC4 |
| 29 | JZTR | JANTZ INC | | | SCAC4 |
| 30 | JZTU | TAIHE GASES (JINGZHOU) LTD | | PRC | BIC |
| 31 | JZTY | JZ TRANSPORTATION INC | | | SCAC4 |
| 32 | JZZ | Air Canada Jazz | IATA: QK, Callsign: Jazz, ICAO designator changed to JZA. Name changed from Air Canada Regional Inc. ICAO designator changed from ARN. ICAO callsign changed from Transcan. | CDN | AVCODES |
