| 1 | MAA | Aerotransportes Mas de Carga, S.A. de C.V. t/a MasAir | IATA: MY, Callsign: MAS Carga, IATA Prefix: 865, Founded in 1992. Commenced operations on 01/04/1992. IATA designator changed to M7. Designator MY reinstated by IATA | MEX | AVCODES |
| 2 | MAA | Aerotransportes Mas de Carga, S.A. de C.V. t/a MasAir | IATA: M7, Callsign: MAS Carga, IATA Prefix: 865, Name changed to Aerotransportes Mas de Carga, S.A. de C.V. d/b/a LATAM Cargo Mexico w.e.f. 05/05/2016. IATA designator changed from MY. Designator MY reinstated by IATA | MEX | AVCODES |
| 3 | MAA | Aerotransportes Mas de Carga, S.A. de C.V. d/b/a LATAM Cargo Mexico | IATA: M7, Callsign: MAS Carga, IATA Prefix: 865, Name reverted to Aerotransportes Mas de Carga, S.A. de C.V. t/a MasAir w.e.f. 01/12/2018. Name changed from Aerotransportes Mas de Carga, S.A. de C.V. t/a MasAir w.e.f. 05/05/2016. IATA designator changed from MY. Designator MY reinstated by IATA | MEX | AVCODES |
| 4 | MAA | Aerotransportes Mas de Carga, S.A. de C.V. t/a MasAir | IATA: M7, Callsign: MAS Carga, IATA Prefix: 865, Name changed from Aerotransportes Mas de Carga, S.A. de C.V. d/b/a LATAM Cargo Mexico w.e.f. 01/12/2018. IATA designator changed from MY. Designator MY reinstated by IATA | MEX | AVCODES |
| 5 | MAA | MasAir | IATA: M7 | | ICAO1 |
| 6 | MAA | Magma Arizona R.R. Co. | 1/1975-1/1980; eliminated 1/1994; 1/1994 (not listed); 7/2000-7/2005 | | NAKINA |
| 7 | MAA | Magma Arizona R.R. Co. | 1/75-1/80; eliminated 1/94; 7/2000 | | NRHS |
| 8 | MAA | MAGMA ARIZONA RAILROAD COMPANY | | | PWRC |
| 9 | MAA | Magma Arizona Railroad | | | RSRV |
| 10 | MAA | Magma Arizona R.R. Co. | | USA | TRAFFIC |
| 11 | MAAA | MALISA TRANSPORTATION | | | SCAC4 |
| 12 | MAAB | M & M AMERICAN INC | | | SCAC4 |
| 13 | MAAC | MAAX BATH INC | | | SCAC4 |
| 14 | MAAF | MAASS FLANGE CORPORATION | | | SCAC4 |
| 15 | MAAG | MARS TRANSPORT INC | | | SCAC4 |
| 16 | MAAI | MARC G TRANSPORT INC | | | SCAC4 |
| 17 | MAAL | MARINE ACE CO LTD | | | SCAC4 |
| 18 | MAAM | MADRIGA | | | SCAC4 |
| 19 | MAAN | MARTAINER | | | SCAC4 |
| 20 | MAAO | MARTELL, VERNON | | | SCAC4 |
| 21 | MAAT | MORALES ARREOLA, ADOLFO | | | SCAC4 |
| 22 | MAAU | REFSTROYSERVICE | | RUS | BIC |
| 23 | MAAV | MARAN GAS MARITIME INC | | | SCAC4 |
| 24 | MAAW | MARQUEZ, ALBERTO TRANSPORT INC | | | SCAC4 |
| 25 | MAAX | Maxx Leasing Co. | added 1/1981; eliminated 10/1988 | | NAKINA |
| 26 | MAAX | Maxx Leasing Co. | added 1/81; eliminated 10/88 | | NRHS |
| 27 | MAAX | *MAXX LEASING CO. | | | PWRC |
| 28 | MAAX | *MEMPHIS AREA TRANSIT AUTHORITY | | | PWRC |
| 29 | MAAX | Maxx Leasing | | | RSRV |
| 30 | MAAY | NAAYKENS TRANSPORT LIMITED | | | SCAC3 |
| 31 | MAAY | MID AMERICAN TRUCKING INC | | | SCAC4 |