| 201 | MADC | MADERE | | | SCAC4 |
| 202 | MADD | MADDEN'S TRANSFER & STORAGE, INC | | | SCAC1 |
| 203 | MADE | MARDENS INC | | | SCAC4 |
| 204 | MADF | MADERA FORWARDING INC | | | SCAC4 |
| 205 | MADI | MADISON TRANSFER AND STORAGE INC | | | SCAC4 |
| 206 | MADJ | M A D J TRUCKING ING | | | SCAC4 |
| 207 | MADL | MASON & DIXON LINES INC | | | PWRC |
| 208 | MADL | MASON AND DIXON LINES | | | SCAC1 |
| 209 | MADL | MASON AND DIXON LINES | | | SCAC4 |
| 210 | MADM | M A D LOGISTICS | | | SCAC4 |
| 211 | MADO | MADLAND, E BRANT | | | SCAC4 |
| 212 | MADP | MACSTEEL SERVICE CENTERS USA | | | SCAC4 |
| 213 | MADQ | M A D TRANSPORT | | | SCAC4 |
| 214 | MADR | MADRAS FREIGHT LINES | | | SCAC4 |
| 215 | MADR | Mülheimer Verkehrs Gesellschaft mbH | Real: MVG, City: Mülheim an der Ruhr | D | TRAFFIC |
| 216 | MADS | MAD SCIENCE PRODUCTIONS | | | SCAC4 |
| 217 | MADT | MADERAS & MATERIALES JR | | | SCAC4 |
| 218 | MADU | MSC- MEDITERRANEAN SHIPPING COMPANY S.A. | | CH | BIC |
| 219 | MADU | MAGNUM SPEDITIONSGELLESHAFT GMBH | | | PWRC |
| 220 | MADU | Magnum Speditionsgelleshaft | | | RSRV |
| 221 | MADU | MAGNUM SPEDITION GMBH | | | SCAC4 |
| 222 | MADV | M&D TRANSFER, INC | | | SCAC1 |
| 223 | MADV | M & D TRANSFER LLC | | | SCAC4 |
| 224 | MAE | Mali Air Luftverkehr Gesellschaft mbH | Callsign: Mali Airexpress, | A | AVCODES |
| 225 | MAE | Maersk Commuter I/S | Callsign: Maerskcommuter, Merged into Maersk Air on 01 April 1990. | DK | AVCODES |
| 226 | MAE | Mali Air | | | ICAO1 |
| 227 | MAE | MID-AMERICA TARIFF BUREAU INC | | | SCAC4 |
| 228 | MAEC | MAERSK LINES | | | PWRC |
| 229 | MAED | Maik AMPFT Eisenbahndienstleistungen | | DE | VKM |
| 230 | MAEE | MASTER SHAFT INC | | | SCAC4 |
| 231 | MAEG | MAERSK GAS CARRIERS | | | SCAC4 |
| 232 | MAEI | MONARCH AIR EXPRESS INC | | | SCAC4 |
| 233 | MAEJ | MARBLE AND GRANITE INC | | | SCAC4 |
| 234 | MAEL | MAREMAR TANKER LLC | | | SCAC4 |
| 235 | MAEM | M A E LOGISTICS INC | | | SCAC4 |
| 236 | MAEP | MAIR EXPRESS | | | SCAC4 |
| 237 | MAER | MARTIN, EARL R | | | SCAC4 |
| 238 | MAES | MONTANA EXPRESS S A DE C V | | | SCAC4 |
| 239 | MAET | MAERSK TANKERS | | | SCAC4 |
| 240 | MAEU | MAERSK A/S | | DK | BIC |
| 241 | MAEU | MAERSK LINES | | | PWRC |
| 242 | MAEU | Maersk Lines | | | RSRV |
| 243 | MAEU | MAERSK LINES, INC. | | | SCAC1 |
| 244 | MAEU | Maersk Line | | | SCAC2 |
| 245 | MAEU | MAERSK LINE | | | SCAC4 |
| 246 | MAEV | MARTIN, ELVIN E | | | SCAC4 |
| 247 | MAEX | Maersk, Inc. | added 7/1990; eliminated 4/1993; 1/1994 (not listed) | | NAKINA |
| 248 | MAEX | Maersk, Inc. | added 7/90; eliminated 4/93; 1/94 | | NRHS |
| 249 | MAEX | MAERSK, INC. | | | PWRC |
| 250 | MAEX | MAERSK INC. | | | PWRC |
| 251 | MAEY | MAC & MAC HYDRODEMOLITION INC | | | SCAC4 |
| 252 | MAEZ | MANSON ELEVATOR | | | PWRC |
| 253 | MAF | Mission Aviation Fellowship (MAF) | Callsign: Missi, | RI | AVCODES |
| 254 | MAF | Aerolineas MAS, S.A. | IATA: N3, Callsign: Airmas, | DOM | AVCODES |
| 255 | MAF | Mission Aviation Fellowship | | | ICAO1 |
| 256 | MAF | Myanmar | | MYA | TRAFFIC |
| 257 | MAFA | MARKT REFRIGERATED LLC | | | SCAC4 |
| 258 | MAFC | MCCAIN TRUCKING | | | SCAC4 |
| 259 | MAFD | MARTINS FEED INC | | | SCAC4 |
| 260 | MAFL | MALONE FREIGHT LINES INC | | | SCAC4 |
| 261 | MAFM | MARTIN FARMS LTD | | | SCAC4 |
| 262 | MAFN | M A F TRANSPORT LLC | | | SCAC4 |
| 263 | MAFP | MAPLE ACRES FOREST PRODUCTS | | | SCAC4 |
| 264 | MAFQ | MAFCO WORLDWIDE CORP | | | SCAC4 |
| 265 | MAFT | MASTER CARRIER, INC | | | SCAC1 |
| 266 | MAFT | MASTER CARRIER INC | | | SCAC4 |
| 267 | MAFU | MAFERMAR | | | SCAC4 |
| 268 | MAFW | MADDEN, FRANK W COMPANY | | | SCAC4 |
| 269 | MAG | Air Margarita | Callsign: Agata, | YV | AVCODES |
| 270 | MAG | Meridan Airways Ltd. | Callsign: Merid Air, IATA Prefix: 667, | GH | AVCODES |
| 271 | MAG | NATO Alliance Ground Surveillance (AGS) | Callsign: Magna, | I | AVCODES |
| 272 | MAG | Magirus | | D | TRAFFIC |
| 273 | MAGC | MAGMA COPPER COMPANY | | | PWRC |
| 274 | MAGC | MAGNATE CONSOLIDATED INC | | | SCAC4 |
| 275 | MAGD | MAGNA ENERGY SERVICES | | | SCAC4 |
| 276 | MAGDA | Uslugi Transportowe Józef Magda | City: Makowisko | PL | TRAFFIC |
| 277 | MAGE | MAAG TRANSPORT INCORPORATED | | | SCAC4 |
| 278 | MAGF | MARGO TRANSPORT, INC | | | SCAC1 |
| 279 | MAGGI | Maggi | | CH | TRAFFIC |
| 280 | MAGH | MAGNAN, NIL TRANSPORT ENR | | | SCAC4 |
| 281 | MAGI | MARINE AGENCIES INC | | | SCAC4 |
| 282 | MAGJ | M A G TRUCKING INC | | | SCAC4 |
| 283 | MAGL | MAGO CONSTRUCTION CO LLC | | | SCAC4 |
| 284 | MAGLI | Magliola Antonio & Figli S.p.a. - workshop | | I | TRAFFIC |
| 285 | MAGM | MAGNACOM | | | SCAC4 |
| 286 | MAGN | MAGNOLIA TRANSPORTATION | | | SCAC4 |
| 287 | MAGQ | MATSQUI AG REPAIR LTD | | | SCAC4 |
| 288 | MAGR | MAGIMAR SHIPPING COMPANY LIMITED | | | SCAC4 |
| 289 | MAGS | MARION AG SERVICE INC | | | SCAC4 |
| 290 | MAGU | TEXTAINER EQUIPMENT MANAGEMENT LTD | | BM | BIC |
| 291 | MAGU | MAGELLAN CONTAINER SERVICES GMBH | | | SCAC4 |
| 292 | MAGV | MAGNUM MOVING & STORAGE | | | SCAC4 |
| 293 | MAGX | Midwest Agri. Commodities Co. | added 7/2006 | | NAKINA |
| 294 | MAGX | Magnimet, Monroe Scrap Division (interplant service) | 1/1980; 1/1994 (not listed) | | NAKINA |
| 295 | MAGX | Magnimet, Monroe Scrap Division (interplant service) | 1/80-1/94 | | NRHS |
| 296 | MAGX | *(NIS) MAGNIMET, MONROE SCRAP DIVISION | | | PWRC |
| 297 | MAGX | +MIDWEST AGRI. COMMODITIES CO. | | | PWRC |
| 298 | MAGX | Magnimet (Monroe Scrap Division) | | | RSRV |
| 299 | MAGX | MIDWEST AGRI COMMODITIES | | | SCAC4 |
| 300 | MAH | MALEV Hungarian Airlines Public Limited Company (MALEV p.l.c.) | IATA: MA, Callsign: Malev, IATA Prefix: 182, Name changed to MALEV Hungarian Airlines Limited | H | AVCODES |
