| 1 | ZG | Air Express Limited | ICAO: AEJ, Callsign: Khaki Express, | EAT | AVCODES |
| 2 | ZG | Viva Macau Limited | ICAO: VVM, Callsign: Jackpot, IATA Prefix: 887, Air Operator Certificate was revoked end March 2010. Designator ZG reinstated by IATA | MAC | AVCODES |
| 3 | ZG | Joint Stock Company Airline "Groznyy Avia" | ICAO: GOZ, Callsign: Groznyy Avia, AOC restricted by Authorities January 2017. | RUS | AVCODES |
| 4 | ZG | Zipair Tokyo, Inc. | ICAO: TZP, Callsign: Zippy, LCC subsidary of Japan Airlines. Established on 08 March 2019. Due to commence operations in Summer 2020 with 787-8 aircraft. | J | AVCODES |
| 5 | ZGBS | ZELLAR TRUCKING INC | | | SCAC4 |
| 6 | ZGHB | Zakłady Górniczo-Hutnicze “Bolesław” S.A. | | PL | VKM |
| 7 | ZGHL | Z & G HAULING LLC | | | SCAC4 |
| 8 | ZGHU | SHANGHAI ZHONGGU LOGISTICS CO., LTD. | | PRC | BIC |
| 9 | ZGIC | ZYGO GROUP INC | | | SCAC4 |
| 10 | ZGKC | Zakład Gospodarki Komunalnej w Cieszynie | City: Cieszyn | PL | TRAFFIC |
| 11 | ZGKY | ZAVALA GONZALEZ, KAREN YVETTE | | | SCAC4 |
| 12 | ZGLO | ZUNG TRANSPORT SOLUTIONS INC | | | SCAC4 |
| 13 | ZGLR | ZUNIGA VILLASANA, ISIDRO | | | SCAC4 |
| 14 | ZGLU | SHANGHAI ZHONGGU LOGISTICS CO., LTD. | | PRC | BIC |
| 15 | ZGMH | ZEIGLER, M H & SONS LLC | | | SCAC4 |
| 16 | ZGMNT | Zakład Gospodarki Mieszkaniowej Nowy Tomyśl | City: Nowy Tomyśl | PL | TRAFFIC |
| 17 | ZGPKS | Zwiazek Gmin "Podkarpacka Komunikacja Samochodowa" | | PL | TRAFFIC |
| 18 | ZGRA | ZAPATA GUEVARA, ALDO A | | | SCAC4 |
| 19 | ZGRL | ZEIGLER, R L CO INC | | | SCAC4 |
| 20 | ZGRU | ZGROUP SAC | | PE | BIC |
| 21 | ZGXU | SHANGHAI ZHONGGU LOGISTICS CO., LTD. | | PRC | BIC |
