| 1 | MZ | PT. Merpati Nusantara | ICAO: MNA, Callsign: Merpati, IATA Prefix: 621, Name changed to Merpati Nusantara Airlines, Pt. | RI | AVCODES |
| 2 | MZ | Aircraft Maintenance Company (AMC Airlines) | ICAO: AMV, Callsign: AMC Airlines, Founded in 1992 Name changed from Aircraft Maintenance Company (AMC Aviation) during 2004. Designator MZ* recalled by IATA | ET | AVCODES |
| 3 | MZ | Merpati Nusantara Airlines, Pt. | ICAO: MNA, Callsign: Merpati, IATA Prefix: 621, Designator MZ recalled by IATA. Name changed from PT. Merpati Nusantara | RI | AVCODES |
| 4 | MZ | Amakusa Airlines Co., Ltd. | ICAO: AHX, Callsign: Amakusa Air, | J | AVCODES |
| 5 | MZ | Servicios Aereos Ejecutivos Saereo, S.A. | ICAO: SRO, Callsign: Saereo, IATA Prefix: 532, IATA designator changed from L6. Founded in 1994. | EC | AVCODES |
| 6 | MZ | Aircraft Maintenance Company (AMC Aviation) | ICAO: AMV, Callsign: AMC Airlines, Founded in 1992. Name changed to Aircraft Maintenance Company (AMC Airlines) during 2004. Designator MZ* recalled by IATA | ET | AVCODES |
| 7 | MZ | Makedonski Zeleznici | | MK | TRAFFIC |
| 8 | MZ | Makedonske Zelenice | | MK | VKM |
| 9 | MZA | Air Zory | Callsign: Air Zory, | BG | AVCODES |
| 10 | MZA | JSC Aircompany Irtysh-Air | IATA: IH, | KZ | AVCODES |
| 11 | MZA | | | E | TRAFFIC |
| 12 | MZAE | MENDOZA ACOSTA, ELSA | | | SCAC4 |
| 13 | MZAK | MAM-ZAK INC | | | SCAC4 |
| 14 | MZAM | Miejski Zakład Komunikacji Sp. z o.o. w Zamościu | | PL | TRAFFIC |
| 15 | MZAO | MARTINEZ, ADRIANA O | | | SCAC4 |
| 16 | MZAR | MARROQUIN SALARAR, FELIPE DE JESUS | | | SCAC4 |
| 17 | MZBF | MOUZIN BROTHERS FARMS LLC | | | SCAC4 |
| 18 | MZBO | MENEZES BROTHERS, INC | | | SCAC1 |
| 19 | MZBO | MUNOZ, J J A DIST | | | SCAC4 |
| 20 | MZCC | MONARREZ CARRERA, CARLOS | | | SCAC4 |
| 21 | MZCD | MUDANZAS CORDOVA S A DE C V | | | SCAC4 |
| 22 | MZCE | MATINEZ CARGO EXPRESS CORP | | | SCAC4 |
| 23 | MZCJ | MENENDEZ, C J COMPANY INC | | | SCAC4 |
| 24 | MZCK | MARTINEZ, C TRUCKING INC | | | SCAC4 |
| 25 | MZCL | MARTINEZ CRUZ, LUIS FERNANDO | | | SCAC4 |
| 26 | MZCR | MARTINEZ CASTELLANOS, PATRICIA | | | SCAC4 |
| 27 | MZCT | MANJARREZ, C TRUCKING | | | SCAC4 |
| 28 | MZE | Zenith Aviation (Malta) Ltd | | M | AVCODES |
| 29 | MZEA | MANZANO, ELENILSON A | | | SCAC4 |
| 30 | MZEE | WOODYS XPRESS INC | | | SCAC4 |
| 31 | MZEI | MALIZ ENTERPRISES INC | | | SCAC4 |
| 32 | MZEL | Mariazellerbahn | | A | TRAFFIC |
| 33 | MZEN | MARUZEN SHOWA UNYU CO LTD | | | SCAC4 |
| 34 | MZEO | MARQUEZ, E TRANSPORT | | | SCAC4 |
| 35 | MZER | MARTINEZ, EDWIN REYES | | | SCAC4 |
| 36 | MZFE | MAZZAFERRO, BRUNO | | | SCAC4 |
| 37 | MZFS | MOBILIZED FUELS INC | | | SCAC4 |
| 38 | MZGA | MERAZ RAVAGO, SERGIO | | | SCAC4 |
| 39 | MZGC | MUNOZ GARCIA, ARTURO | | | SCAC4 |
| 40 | MZGO | MERAZ GUTIERREZ, OSWALDO | | | SCAC4 |
| 41 | MZGP | MIRZ LOGISTICS GROUP | | | SCAC4 |
| 42 | MZGT | MANZO GUIRADO, RAUL ANTONIO | | | SCAC4 |
| 43 | MZHM | MARDENIZ SHIPPING MANAGEMENT CO INC | | | SCAC4 |
| 44 | MZI | Zorte Air, LLC | Callsign: Zorte, | MGL | AVCODES |
| 45 | MZIP | MEDELEZ INCORPORATED | | | SCAC4 |
| 46 | MZIZ | MARKO B ZANOVICH | | | PWRC |
| 47 | MZIZ | Marko B Zanovich | | | RSRV |
| 48 | MZIZ | MARKO B ZANOVICH | | | SCAC4 |
| 49 | MZJC | MUNOZ, JUAN C | | | SCAC4 |
| 50 | MZJJ | MARTINEZ, J J EXPRESS INC | | | SCAC4 |
| 51 | MZJT | MARTINEZ, JOEL TRUCKING | | | SCAC4 |
| 52 | MZK | AVC Airlines | | | ICAO1 |
| 53 | MZKBB | MZK Bielsko-Biala | | PL | TRAFFIC |
| 54 | MZKBE | Miejski Zakład Komunikacji w Bełchatowie | City: Bełchatow | PL | TRAFFIC |
| 55 | MZKC | MARREZ TRUCKING LLC | | | SCAC4 |
| 56 | MZKI | MEZERA, MIKE TRUCKING LLC | | | SCAC4 |
| 57 | MZKJ | Miejski Zakład Komunikacji Sp. Z O.O. w Jarosławiu | City: Gdansk | PL | TRAFFIC |
| 58 | MZKKK | Miejski Zakład Komunikacji w Kędzierzynie-Koźlu | | PL | TRAFFIC |
| 59 | MZKOS | Miejski Zakład Komunikacji w Ostrowcu Świętokrzyskim | City: Ostrowiec Świętokrzyski | PL | TRAFFIC |
| 60 | MZKOW | Miejski Zakład Komunikacji S.A., Ostrów Wielkopolski | Real: MZK, City: Ostrów Wielkopolski | PL | TRAFFIC |
| 61 | MZKS | MARTINEZ TRUCKING & SERVICE | | | SCAC4 |
| 62 | MZKSW | Miejski Zakład Komunalny sp. z o. o., Stalowa Wola | | PL | TRAFFIC |
| 63 | MZKT | MZK Torun | City: Torun | PL | TRAFFIC |
| 64 | MZKW | MZK Warszawa | | PL | TRAFFIC |
| 65 | MZKZG | Miejski Zaklad Komunikacji w Zielonej Górze | City: Zielona Góra | PL | TRAFFIC |
| 66 | MZL | Aerovias Montes Azules, S.A. de C.V. | Callsign: Montes Azules, | MEX | AVCODES |
| 67 | MZL | Aerovias Montes Azules | | | ICAO1 |
| 68 | MZL | MINNESOTA ZEPHYR, LTD. | | | PWRC |
| 69 | MZLA | MORALES GOMEZ, LOURDES ADDY | | | SCAC4 |
| 70 | MZLI | MARTINEZ VILLANUEVA, FRANCISCO JAVI | | | SCAC4 |
| 71 | MZLN | MZ LOGISTICS INC | | | SCAC4 |
| 72 | MZLO | MENTZER OIL COMPANY | | | SCAC4 |
| 73 | MZLQ | METZ LOGISTIX CANADA INC | | | SCAC4 |
| 74 | MZLR | METZLER BROS TRANSPORT INC | | | SCAC4 |
| 75 | MZLS | MCKENZIE LOGISTICS | | | SCAC4 |
| 76 | MZMA | MENTZ MARITIME CONSULTANTS INC | | | SCAC4 |
| 77 | MZMC | MZM TRUCK & TRAILER REPAIR INC | | | SCAC4 |
| 78 | MZME | MURILLO ZAZUETA, MARIA DEL REFUGIO | | | SCAC4 |
| 79 | MZMG | MOZAIC MANAGEMENT | | | SCAC4 |
| 80 | MZMO | MUINZER MOVING & STORAGE CO | | | SCAC4 |
| 81 | MZMU | MOGÁS S.A. | | MOC | BIC |
| 82 | MZN | Aviation Specialties Unlimited, Inc. | Callsign: Amazon, | USA | AVCODES |
| 83 | MZNM | MERAZ TRUCKING | | | SCAC4 |
| 84 | MZQT | MARQUEZ TRUCKING | | | SCAC4 |
| 85 | MZRA | MARTINEZ DE LA ROSA, ADOLFO | | | SCAC4 |
| 86 | MZRL | MZR TRANSPORT LLC | | | SCAC4 |
| 87 | MZRR | MONTEZ RODRIGUEZ, RICARDO | | | SCAC4 |
| 88 | MZRT | MUNOZ, RICHARD TRUCKING | | | SCAC4 |
| 89 | MZS | Mahfooz Aviation (Gambia) Ltd. | IATA: M2, Callsign: Mahfooz, Name changed from Mahfooz Aviation G Limited | SA | AVCODES |
| 90 | MZS | Mahfooz Aviation G. Limited | IATA: M2, Callsign: Mahfooz, Name changed to Mahfooz Aviation (Gambia) Ltd. | SA | AVCODES |
| 91 | MZS | Mahfooz Aviation | IATA: M2 | | ICAO1 |
| 92 | MZSGDA | Miejski Zaklad Komunikacji w Starogardzie Gdañskim | | PL | TRAFFIC |
| 93 | MZSN | MARTINEZ AND SONS S DE R L DE C V | | | SCAC4 |
| 94 | MZSU | MACEDONIAN RAILWAYS | | | SCAC4 |
| 95 | MZT | First Mandarin Business Aviation Co., Ltd. d/b/a ZYB Lily Jet | Callsign: Zhong Tai, | PRC | AVCODES |
| 96 | MZTD | MUNOZ TRUCKING | | | SCAC4 |
| 97 | MZTG | MZ TRUCKING | | | SCAC4 |
| 98 | MZTI | MOZZETTI TRUCKING INC | | | SCAC4 |
| 99 | MZTJ | MARTINEZ TRUCKING | | | SCAC4 |
| 100 | MZTK | MAZU TRUCKING | | | SCAC4 |
