| 1 | TZT | Air Zambezi | IATA: ZT, Callsign: Zambezi, Designator ZT reinstated by IATA | ZW | AVCODES |
| 2 | TZT | Air Zambezi | IATA: ZT, Callsign: Zambezi, Designator ZT recalled by IATA | ZW | AVCODES |
| 3 | TZT | Air Zambezi | | | ICAO1 |
| 4 | TZTA | TWO ZERO THREE ZERO (2030) NATIONAL | | | SCAC4 |
| 5 | TZTE | TWO ZERO THREE ZERO FIVE FOUR SIX ( | | | SCAC4 |
| 6 | TZTI | TRANZACT TECHNOLOGIES | | | SCAC4 |
| 7 | TZTM | TWO ZERO THREE THREE SIX SIX NINE ( | | | SCAC4 |
| 8 | TZTN | TWO ZERO TWO NINE ONE EIGHT ONE (20 | | | SCAC4 |
| 9 | TZTR | TRANSPORT MIGUEL DOMINGUEZ INC | | | SCAC4 |
| 10 | TZTY | TY ZAC TRUCKING | | | SCAC4 |
