| 1 | YZ | Transports Aereos de Guinee-Bissau | Designator YZ reinstated by IATA | GW | AVCODES |
| 2 | YZ | TACA Ecuador, S.A. | | EC | AVCODES |
| 3 | YZ | ATR Leasing VI B.V. (Holland Exel) | ICAO: HXL, Callsign: Holland Exel, Designator YZ reinstated by IATA | NL | AVCODES |
| 4 | YZ | Flywell Airlines Private Limited t/a Zimbabwe Airlink | ICAO: FEM, Callsign: Zim Airlink, Designator YZ recalled by IATA. ICAO callsign changed from Flywell | ZW | AVCODES |
| 5 | YZ | Yourways Luftverkehrsgesellschaft mbH | ICAO: PWY, Callsign: Yourways, Ceased operations on 40 February 2019. Name changed from Privateways Luftfahrtgesellschaft mbH. | D | AVCODES |
| 6 | YZ | Sonoco ThermoSafe | Non-airline Unit Load Devices (ULD) companies | USA | AVCODES |
| 7 | YZCU | YIZHOU CONTAINER (SHANDONG) CO., LTD. | | PRC | BIC |
| 8 | YZLC | YAZOO LOGISTICS LLC | | | SCAC4 |
| 9 | YZR | Yangtze River Express Airlines Co., Ltd. | IATA: Y8, Callsign: Yangtze River, Name changed to Yangtze River Airlines Co., Ltd. w.e.f. 28 November 2015. | PRC | AVCODES |
| 10 | YZR | Yangtze River Airlines Co., Ltd. | IATA: Y8, Callsign: Yangtze River, Name changed to Suparna Airlines Co., Ltd. On 07 July 2017. Name changed from Yangtze River Express Airlines Co., Ltd. w.e.f. 28 November 2015. | PRC | AVCODES |
| 11 | YZR | Suparna Airlines Co., Ltd. | IATA: Y8, Callsign: Yangtze River, Name changed from Yangtze River Airlines Co., Ltd. w.e.f. 07 July 2017. Name previously changed from Yangtze River Express Airlines Co., Ltd. w.e.f. 28 November 2015. | PRC | AVCODES |
| 12 | YZR | Yangtze River Express | IATA: Y8 | | ICAO1 |
| 13 | YZR | Yangtze River Airlines | | PRC | TRAFFIC |
| 14 | YZTU | LIANYUNGANG COSCO SHIPPING SPECIAL EQUIPMENT MANUFACTURING CO., LTD. | | PRC | BIC |
