| 4101 | MINE | Mine | | X | TRAFFIC |
| 4102 | MINF | MINFREIGHT CORPORATION | | | SCAC4 |
| 4103 | MING | MSA INC | | | SCAC4 |
| 4104 | MINH | MINH INTERNATIONAL INC | | | SCAC4 |
| 4105 | MINIK | MiniBus Karczew | | PL | TRAFFIC |
| 4106 | MINJ | MAS INC | | | SCAC4 |
| 4107 | MINL | MICHELS INDUSTRIES LTD | | | SCAC4 |
| 4108 | MINN | MINTRANS LIMITED | | | SCAC4 |
| 4109 | MINO | MISS MESSENGER INC | | | SCAC4 |
| 4110 | MINQ | MORINDA TRANSPORT INC | | | SCAC4 |
| 4111 | MINR | MINI TRUCKING | | | SCAC4 |
| 4112 | MINS | MARTINS TRANSPORT SERVICE LLC | | | SCAC4 |
| 4113 | MINSK | Minsktrans | City: Minsk | BY | TRAFFIC |
| 4114 | MINT | MAVERICK INC | | | SCAC4 |
| 4115 | MINU | SPEDITION MINOR GMBH | | D | BIC |
| 4116 | MINU | CHINA OCEAN SHIPPING COMPANY | | | PWRC |
| 4117 | MINU | China Ocean Shipping | | | RSRV |
| 4118 | MINU | SPEDITION MINOR GMBH | | | SCAC4 |
| 4119 | MINV | MONAICA INDUSTRIAL SA DE CV | | | SCAC4 |
| 4120 | MINW | MTS INC | | | SCAC4 |
| 4121 | MINX | Minnesota Mining and Manufacturing Co., Inc. | 1/1941-10/1966; eliminated 4/1968 | | NAKINA |
| 4122 | MINX | Minnesota Mining and Manufacturing Co., Inc. | 1/52-10/66; eliminated 4/68 | | NRHS |
| 4123 | MINX | *MINNESOTA MINING & MANUFACTURING CO., INC. | | | PWRC |
| 4124 | MINX | *STATE OF MINNESOTA, DEPT OF WEIGHTS & MEASURES | | | PWRC |
| 4125 | MINX | STATE OF MINNESOTA DEPT OF | | | SCAC4 |
| 4126 | MIO | Midas Airlines, C.A. | Callsign: Mico, | YV | AVCODES |
| 4127 | MIOB | M I LOGISTICS LLC | | | SCAC4 |
| 4128 | MIOC | MERRITT LOGISTICS LLC | | | SCAC4 |
| 4129 | MIOM | MANION, TOMMY FARMS | | | SCAC4 |
| 4130 | MIOO | MORGAN INDUSTRIAL INC | | | SCAC4 |
| 4131 | MIOS | MATSON INTEGRATED LOGISTICS INC | | | SCAC4 |
| 4132 | MIOT | MIAMI COACH & TOURS LLC | | | SCAC4 |
| 4133 | MIOU | MIOULIO SHIPPING COMPANY LIMITED | | CY | BIC |
| 4134 | MIOV | MILLER & OVERTON TRUCKING | | | SCAC4 |
| 4135 | MIPA | MIDWEST SYSTEMS | | | SCAC4 |
| 4136 | MIPE | MISSION PETROLEUM CARRIERS INC | | | SCAC4 |
| 4137 | MIPG | MOROSO INVESTMENT PARTNERS LLC | | | SCAC4 |
| 4138 | MIPJ | MARINETRANS INDIA PVT LTD | | | SCAC4 |
| 4139 | MIPK | MICHELSEN PACKAGING COMPANY | | | SCAC4 |
| 4140 | MIPQ | MARATHON INDUSTRIAL PRODUCTS CO | | | SCAC4 |
| 4141 | MIPS | MEDINA PETROLEUM TRANSPORT | | | SCAC4 |
| 4142 | MIPT | MIIP TRANSPORT | | | SCAC4 |
| 4143 | MIPU | PT. INDONESIA MOROWALI INDUSTRIAL PARK | | RI | BIC |
| 4144 | MIPV | MILLER PAVING LIMITED | | | SCAC4 |
| 4145 | MIPX | Millennium Petrochemicals, Inc. | 7/2000; eliminated 4/2001; 7/2005 (not listed) | | NAKINA |
| 4146 | MIPX | Millennium Petrochemicals, Inc. | 7/2000; eliminated 4/2001 | | NRHS |
| 4147 | MIPX | MILLENNIUM PETROCHEMICALS, INC. | | | PWRC |
| 4148 | MIPX | Millennium Petrochemicals | | | RSRV |
| 4149 | MIQL | METRO-INTERMODAL LTD | | | SCAC4 |
| 4150 | MIQO | MERIDIAN IQ | | | SCAC4 |
| 4151 | MIQR | MID AMERICA RELOCATION | | | SCAC4 |
| 4152 | MIR | Miramichi Air Service Ltd. | Callsign: Miramichi, | CDN | AVCODES |
| 4153 | MIR | Servicios Aeroes Mira, S.A. de C.V. | Callsign: Aeromir, | MEX | AVCODES |
| 4154 | MIR | Miramichi Air Service | | | ICAO1 |
| 4155 | MIR | Minneapolis Industrial Ry. Co. | 4/1961-10/1966 & 1/1975-1/1980; eliminated 1/1985 | | NAKINA |
| 4156 | MIR | Minneapolis Industrial Ry. Co. | 4/61-10/66 & 1/75-1/80; eliminated 1/85 | | NRHS |
| 4157 | MIR | MINNEAPOLIS INDUSTRIAL RAILWAY COMPANY | | | PWRC |
| 4158 | MIR | Minneapolis Industrial Railway | | | RSRV |
| 4159 | MIR | Mercitalia | | I | TRAFFIC |
| 4160 | MIRD | MIRANDA TRUCKING | | | SCAC4 |
| 4161 | MIRG | MIRAMAR TRANSPORTATION INC | | | SCAC4 |
| 4162 | MIRI | MILLER TRANSPORTS INC | | | SCAC4 |
| 4163 | MIRJ | MIRMEG CARTAGE INC | | | SCAC4 |
| 4164 | MIRK | M I R E TRANSPORTATION INC | | | SCAC4 |
| 4165 | MIRL | MIRACLE MOVERS, THE | | | SCAC4 |
| 4166 | MIRN | MIRANDA OTERO, ROMULO | | | SCAC4 |
| 4167 | MIRR | MICHIGAN INTERSTATE RAILROAD | | | PWRC |
| 4168 | MIRR | MIRRAA | | | SCAC4 |
| 4169 | MIRS | MIROS EXPRESS & VAN LINES INC | | | SCAC4 |
| 4170 | MIRT | MILLER, RON TRUCKING | | | SCAC4 |
| 4171 | MIRU | MIRROR PALACE BVBA | | B | BIC |
| 4172 | MIRU | ROLAN LTD | | | SCAC3 |
| 4173 | MIRW | MIDLAND RESOURCE RECOVERY | | | SCAC4 |
| 4174 | MIRX | Regional Recycling, L.L.C. | 7/2000-7/2005 | | NAKINA |
| 4175 | MIRX | Mindis Recycling | added 1/1997 | | NAKINA |
| 4176 | MIRX | Mindis Recycling | added 1/97 | | NRHS |
| 4177 | MIRX | Regional Recycling, L.L.C. | Jul-00 | | NRHS |
| 4178 | MIRX | REGIONAL RECYCLING, LLC [MINDIS RECYCLING] | | | PWRC |
| 4179 | MIRX | Regional Recycling | | | RSRV |
| 4180 | MIRX | REGIONAL RECYCLING LLC | | | SCAC4 |
| 4181 | MIS | Midstate Airlines, Inc. | Callsign: Midstate, | USA | AVCODES |
| 4182 | MIS | Air Strabing | IATA: IU, | D | AVCODES |
| 4183 | MIS | Midstate Airlines | | | ICAO1 |
| 4184 | MIS | Mississippi Central R.R. Co. | 1/1994-7/2005 | | NAKINA |
| 4185 | MIS | Mississippi Central R.R. Co. | 1/94-7/2000 | | NRHS |
| 4186 | MIS | MISSISSIPPI CENTRAL RAILROAD | | | PWRC |
| 4187 | MIS | Mississippi Central Railroad | | | RSRV |
| 4188 | MIS | SILVANIA INTERNATIONAL PROD. SRL | | RO | VKM |
| 4189 | MISA | MISC AGENCIES (NETHERLANDS) BV | | | SCAC4 |
| 4190 | MISA | Millet SAS | | FR | VKM |
| 4191 | MISC | MISFITS | | | SCAC4 |
| 4192 | MISC | Mississipi Central | | USA | TRAFFIC |
| 4193 | MISD | MIAS TRANSPORTS | | | SCAC4 |
| 4194 | MISH | MISSISSIPPI TRANSPORTERS INC | | | SCAC4 |
| 4195 | MISI | MECHANICAL INSULATION SUPPLY INC | | | SCAC4 |
| 4196 | MISJ | MINORITY INTERMODAL SPECIALISTS INC | | | SCAC4 |
| 4197 | MISK | MISL TRANSPORT INC | | | SCAC4 |
| 4198 | MISL | MISL TRANSPORT INC (TRUCKLOAD DIVIS | | | SCAC4 |
| 4199 | MISN | MULTIPLES INTERNATIONAL SERVICES LL | | | SCAC4 |
| 4200 | MISO | MID STATE OIL TOOLS INC | | | SCAC4 |
