| 6001 | MNSP | MANNYS TRANSPORT INC | | | SCAC4 |
| 6002 | MNSQ | MN SERVICES LLC | | | SCAC4 |
| 6003 | MNSR | MANSER TRUCKING LTD | | | SCAC4 |
| 6004 | MNSS | MANASSA | | | SCAC4 |
| 6005 | MNST | MOONSTONE TRANSPORT LTD | | | SCAC4 |
| 6006 | MNSV | MORTON SPREADING INC | | | SCAC4 |
| 6007 | MNSW | MORTONS OF CHICAGO INC | | | SCAC4 |
| 6008 | MNSY | MOUNTAIN STATES TRANSPORT INC | | | SCAC4 |
| 6009 | MNT | Montserrat Airways Ltd. | Callsign: Montserrat, Name changed to Montserrat Airways Ltd. t/a FlyMontserrat | MS | AVCODES |
| 6010 | MNT | Montserrat Airways Ltd. t/a FlyMontserrat | IATA: 5M, Callsign: Montserrat, Name changed from Montserrat Airways Ltd. | MS | AVCODES |
| 6011 | MNT | Montserrat Airways | | | ICAO1 |
| 6012 | MNTB | M & T TRANSPORT INC | | | SCAC4 |
| 6013 | MNTC | MONTBEC TRANSPORT INC | | | SCAC4 |
| 6014 | MNTE | MONTORO TRUCKING INC | | | SCAC4 |
| 6015 | MNTF | MIDNIGHT TRANSFER LLC | | | SCAC4 |
| 6016 | MNTG | MADDEN TOURS | | | SCAC4 |
| 6017 | MNTH | MONTERREY HATS | | | SCAC4 |
| 6018 | MNTJ | MORNIC CORPORATION | | | SCAC4 |
| 6019 | MNTK | MONTAUK | | | SCAC4 |
| 6020 | MNTL | MOEN TRUCK LINE | | | SCAC4 |
| 6021 | MNTM | MINNESOTA TRANSPORTATION MUSEUM | | | PWRC |
| 6022 | MNTN | M & N TRANSPORT | | | SCAC4 |
| 6023 | MNTP | MID NORTH TRANSPORT LTD | | | SCAC4 |
| 6024 | MNTQ | M N T INC | | | SCAC4 |
| 6025 | MNTS | MONTANA TRACTORS | | | SCAC4 |
| 6026 | MNTT | MOUNTAIN TRANSPORT CORP | | | SCAC4 |
| 6027 | MNTU | TRANSPORT MONTSANT S.A | | E | BIC |
| 6028 | MNTU | TRANSPORTS MONTSANT SA | | | SCAC4 |
| 6029 | MNTW | MONTICO | | | SCAC4 |
| 6030 | MNTX | Minnesota Transportation Museum, Inc. | 7/2005 (not listed) | | NAKINA |
| 6031 | MNTX | MINNESOTA TRANSPORTATION MUSEUM | | | PWRC |
| 6032 | MNTX | Minnesota Transportation Museum | | | RSRV |
| 6033 | MNTX | MINNESOTA TRANSPORTATION MUSEUM INC | | | SCAC4 |
| 6034 | MNU | Elite Airways LLC | IATA: 7Q, Callsign: Mainer, | USA | AVCODES |
| 6035 | MNUC | MAGNUS CO INC | | | SCAC4 |
| 6036 | MNUK | MOUNTAIN TRUCKING INC | | | SCAC4 |
| 6037 | MNUM | MAGNUM EXPRESS INC | | | SCAC4 |
| 6038 | MNUS | MCMANUS & SONS INC | | | SCAC4 |
| 6039 | MNUT | MCNUTT OIL COMPANY INC | | | SCAC4 |
| 6040 | MNV | Maurtanienne Aerienne Et Navale | Callsign: Navale, | RIM | AVCODES |
| 6041 | MNV | Mauritanienne Aerienne Et Navale | | | ICAO1 |
| 6042 | MNVA | MNVA R.R., Inc. | added 10/1990; 1/1994; eliminated 4/1995 | | NAKINA |
| 6043 | MNVA | Minnesota Valley Transportation Co., Inc.-Southwest | added 7/1984; eliminated 10/1990 | | NAKINA |
| 6044 | MNVA | Minnesota Valley Transportation Co., Inc.-Southwest | added 7/84; eliminated 10/90 | | NRHS |
| 6045 | MNVA | MNVA R.R., Inc. | added 10/90; 1/94; eliminated 4/95 | | NRHS |
| 6046 | MNVA | MINNESOTA VALLEY RAILROAD (MNVA RAILROAD) [MINNESOTA VALLEY TRANSPORTATION CO.] | | | PWRC |
| 6047 | MNVA | Minnesota Valley Transportation Co., Inc.-Southwest | | USA | TRAFFIC |
| 6048 | MNVE | MINERVE TRANSPORT | | | SCAC4 |
| 6049 | MNVG | MOORE NAVIGATION SA | | | SCAC4 |
| 6050 | MNVI | MARNAVI S P A | | | SCAC4 |
| 6051 | MNVM | MOUNTAINVIE | | | SCAC4 |
| 6052 | MNVT | RETIRED 05-15-92 ATP (0900) | | | PWRC |
| 6053 | MNVT | MULTINVEST INC | | | SCAC4 |
| 6054 | MNVU | MTS LOGISTICS | | | SCAC4 |
| 6055 | MNVW | MOUNTAIN VIEW TOURS INC | | | SCAC4 |
| 6056 | MNVX | MADISON NORTH VERNON TRANSPORATION CORPORATION | | | PWRC |
| 6057 | MNVX | MADISON NORTH VERNON TRANSPORATION | | | SCAC4 |
| 6058 | MNW | CHICAGO, MISSOURI & WESTERN RWY | | | PWRC |
| 6059 | MNWC | MANN, W C TRANSPORTATION INC | | | SCAC4 |
| 6060 | MNWH | M & W HOT SHOT INC | | | SCAC4 |
| 6061 | MNWK | MANWILLER, CHRIS TRUCKING | | | SCAC4 |
| 6062 | MNWM | MITCHELL, NORMAN WILLIAM | | | SCAC4 |
| 6063 | MNWX | Minnesota Dept. of Public Service Weights and Measures Division | added 7/1993; 1/1994; eliminated 10/1999; 7/2000-7/2005 (not listed) | | NAKINA |
| 6064 | MNWX | Minnesota Dept. of Public Service Weights and Measures Division | added 7/93; 1/94; eliminated 10/99; 7/2000 | | NRHS |
| 6065 | MNWX | MINNESOTA DEPT. OF PUBLIC SERVICE WEIGHTS & MEASURES DIV. | | | PWRC |
| 6066 | MNWX | Minnesota Department of Public Service Weights and Measures Division | | | RSRV |
| 6067 | MNWX | MNNESOTA DEPT. OF PUBLIC SERVICE WE | | | SCAC4 |
| 6068 | MNX | Manx Airlines | IATA: JE, Callsign: Manx, IATA Prefix: 916, Designator JE recalled by IATA. Merged in British Airways CitiExpress | GB | AVCODES |
| 6069 | MNX | Manx Airlines | | | ICAO1 |
| 6070 | MNX | Western Fruit Express Co. | added 1/1972; 1/1975-1/1980; eliminated 1/1981 | | NAKINA |
| 6071 | MNX | National Car Co. | added 10/1956; 10/1957-4/1970; eliminated 1/1972 | | NAKINA |
| 6072 | MNX | Burlington Refrigerator Express Co. | added 7/1956; eliminated 10/1956 | | NAKINA |
| 6073 | MNX | National Car Co. | 1/1950-7/1954; eliminated 7/1956 | | NAKINA |
| 6074 | MNX | Mond Nickel Co., Ltd. (Canadian Industries Ltd.) | 7/1930 | | NAKINA |
| 6075 | MNX | National Car Co. | 1/52; eliminated 7/56 | | NRHS |
| 6076 | MNX | Burlington Refrigerator Express Co. | added 7/56 | | NRHS |
| 6077 | MNX | National Car Co. | 10/57-4/70; eliminated 1/72 | | NRHS |
| 6078 | MNX | Western Fruit Express Co. | added 1/72; 1/75-1/80; eliminated 1/81 | | NRHS |
| 6079 | MNX | MOND NICKEL CO., LTD. (CANADIAN INDUSTRIES LTD.) | | | PWRC |
| 6080 | MNX | WESTERN FRUIT EXPRESS [(NCCO) BURLINGTON REFRIGERATOR EXPRESS CO.] | | | PWRC |
| 6081 | MNXB | MOORMAN TRANSPORT | | | SCAC4 |
| 6082 | MNXF | MIDDLETON TRANSPORTATION COMPANY | | | SCAC4 |
| 6083 | MNXI | MCALLISTER & SONS TRANSPORT INC | | | SCAC4 |
| 6084 | MNXL | MARINE TRANSIT | | | SCAC4 |
| 6085 | MNXO | MARTIN TRANSPORTATION | | | SCAC4 |
| 6086 | MNXP | MON TRANS INC | | | SCAC4 |
| 6087 | MNXV | MILLION AIR EXPRESS INC | | | SCAC4 |
| 6088 | MNXY | MAINS TRANSPORTATION SERVICES INC | | | SCAC4 |
| 6089 | MNY | Mooney Aircraft Corp. | Callsign: Mooney Flight, | USA | AVCODES |
| 6090 | MNY | Mooney Aircraft Corporation | | | ICAO1 |
| 6091 | MNYN | MISSIONARY TRANSPORT INC | | | SCAC4 |
| 6092 | MNYS | MOONEYS RELOCATION SPECIALIST INC | | | SCAC4 |
| 6093 | MNZ | Murmansk Aircompany Co. Ltd. | Callsign: Murman Air, | RUS | AVCODES |
| 6094 | MNZ | Murmansk Aircompany | | | ICAO1 |
| 6095 | MNZC | MENNONITE CENTRAL COMMITTEE INC | | | SCAC4 |
| 6096 | MNZE | MARTINEZ SR, ZENAIDO TRUCKING | | | SCAC4 |
| 6097 | MNZG | MUNOZ TRUCKING INC | | | SCAC4 |
| 6098 | MNZI | MARTINEZ TRUCKING | | | SCAC4 |
| 6099 | MNZJ | MARTINEZ, J TRUCKING | | | SCAC4 |
| 6100 | MNZP | MUNOZ, R. TRANSPORT LLC | | | SCAC4 |
