| 8101 | MSOM | MCSHANE OIL | | | SCAC4 |
| 8102 | MSON | MINOS SOCIETA DI NAVIGAZIONE SRL | | | SCAC4 |
| 8103 | MSOO | MASON, | | | SCAC4 |
| 8104 | MSOQ | MIDSTATE CONTAINERS INC | | | SCAC4 |
| 8105 | MSOR | MID SOUTH CONTRACTORS | | | SCAC4 |
| 8106 | MSOS | Przedsiębiorstwo Komunikacji Miejskiej w Sosnowcu | | PL | TRAFFIC |
| 8107 | MSOT | MID-SOUTH TANK LINES LLC | | | SCAC4 |
| 8108 | MSOU | M/S CONTAINERS A/S | | DK | BIC |
| 8109 | MSOW | MARIO AND SON TRUCKING | | | SCAC4 |
| 8110 | MSOY | M & S OIL COMPANY | | | SCAC4 |
| 8111 | MSP | Servicio de Vigilancia Aerea Del Ministerio de Seguridad Publica | Callsign: Seguridad, | CR | AVCODES |
| 8112 | MSP | Servicio De Viglancia Aerea Del Ministerio De Segu | | | ICAO1 |
| 8113 | MSP | Minero Siderurgica de Ponferrada | | E | TRAFFIC |
| 8114 | MSPA | MID STATES PORT AUTHORITY | | | PWRC |
| 8115 | MSPA | MERCIER, STEPHANE | | | SCAC4 |
| 8116 | MSPE | MORAN SHIPPING AGENCIES INC | | | SCAC4 |
| 8117 | MSPF | MACH SPEED TRANSPORTATION INC | | | SCAC4 |
| 8118 | MSPG | MILLER SPRINGS LTD | | | SCAC4 |
| 8119 | MSPJ | MOE & STEVE PARE SALES | | | SCAC4 |
| 8120 | MSPL | MARTIN, STEPHEN L | | | SCAC4 |
| 8121 | MSPM | MELTEMI SPECIAL MARITIME ENTERPRISE | | | SCAC4 |
| 8122 | MSPQ | MESSER TRANSPORT | | | SCAC4 |
| 8123 | MSPT | M-SCRAP TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 8124 | MSPU | MSC- MEDITERRANEAN SHIPPING COMPANY S.A. | | CH | BIC |
| 8125 | MSPV | MASTER PROVISIONS INC | | | SCAC4 |
| 8126 | MSPW | MERCURIO, SAMUEL P | | | SCAC4 |
| 8127 | MSPX | P4 Production, L.L.C. | added 1/1998; 7/2000-7/2005 | | NAKINA |
| 8128 | MSPX | P4 Production, L.L.C. | added 1/98; 7/2000 | | NRHS |
| 8129 | MSPX | P4 PRODUCTIONS, LLC | | | PWRC |
| 8130 | MSPX | P4 Production | | | RSRV |
| 8131 | MSPX | P4 PRODUCTION LLC | | | SCAC4 |
| 8132 | MSPY | MONTCLAIR SURPLUS CO | | | SCAC4 |
| 8133 | MSQ | Meta Linhas Aéreas | | | ICAO1 |
| 8134 | MSQE | MANISTIQUE OIL COMPANY INC | | | SCAC4 |
| 8135 | MSQG | MORSE CONSTRUCTION GROUP INC | | | SCAC4 |
| 8136 | MSQL | M & S LOGISTICS LIMITED | | | SCAC4 |
| 8137 | MSQM | MCCOURT AND SONS EQUIPMENT INC | | | SCAC4 |
| 8138 | MSQR | M S CARRIERS INC | | | SCAC4 |
| 8139 | MSQU | MSA SHIPPING SDN BHD | | MAL | BIC |
| 8140 | MSQU | U.S. DEPARTMENT OF DEFENSE - MILITARY SEALIFT COMMAND, BAYONNE NJ | | | PWRC |
| 8141 | MSQU | Military Sealift Command | | | RSRV |
| 8142 | MSQV | M & S LOGISTICS LLC | | | SCAC4 |
| 8143 | MSQW | MARIS LOGISTICS | | | SCAC4 |
| 8144 | MSQY | MANUFACTURING SERVICES & QUALITY | | | SCAC4 |
| 8145 | MSR | Egyptair | IATA: MS, Callsign: Egyptair, IATA Prefix: 077, Name changed from United Arab Airlines (UAA). ICAO designator changed form EGY | ET | AVCODES |
| 8146 | MSR | Egyptair | IATA: MS | | ICAO1 |
| 8147 | MSR | Mississippi Southern R.R. | 7/2005; added 4/2008 | | NAKINA |
| 8148 | MSR | *MICHIGAN SHORE RAILROAD | | | PWRC |
| 8149 | MSR | +MISSISSIPPI SOUTHERN RAILROAD | | | PWRC |
| 8150 | MSR | Mississippi Southern Railroad (Watco) | | | RSRV |
| 8151 | MSR | MISSISSIPPI SOUTHERN RAILROAD | | | SCAC4 |
| 8152 | MSR | Egyptair | | ET | TRAFFIC |
| 8153 | MSRB | MAINES COLLISION REPAIR & BODY SHOP | | | SCAC4 |
| 8154 | MSRC | Kansas City Southern Ry. Co. | added 7/1994; 7/2000-7/2005 | | NAKINA |
| 8155 | MSRC | MidSouth Rail Corp. | added 7/1986; 1/1994; eliminated 7/1994 | | NAKINA |
| 8156 | MSRC | MidSouth Rail Corp. | added 7/86; 1/94; eliminated 7/94 | | NRHS |
| 8157 | MSRC | Kansas City Southern Ry. Co. | added 7/94; 7/2000 | | NRHS |
| 8158 | MSRC | KANSAS CITY SOUTHERN RAILWAY CO. [MIDSOUTH RAIL CORP.] | | | PWRC |
| 8159 | MSRC | MidSouth Railcorp (Kansas City Southern Railway) | | | RSRV |
| 8160 | MSRC | MidSouth Rail Corp. | | USA | TRAFFIC |
| 8161 | MSRI | MID-STATES RAIL CAR, INC. | | | PWRC |
| 8162 | MSRJ | M & | | | SCAC4 |
| 8163 | MSRK | MOSER TRUCKING LLC | | | SCAC4 |
| 8164 | MSRL | MATERIALES Y ACARREOS DE CERRALVO S | | | SCAC4 |
| 8165 | MSRM | MECHANI | | | SCAC4 |
| 8166 | MSRU | CONTAINER ASSOCIATION ROTTERDAM BV | | | SCAC4 |
| 8167 | MSRV | MINERA SANTA RITA S DE RL | | | SCAC4 |
| 8168 | MSRW | Mississipian Ry. Cooperative, Inc. | added 1/1987; 1/1994-7/2005 | | NAKINA |
| 8169 | MSRW | Mississipian Ry. Cooperative, Inc. | added 1/87; 1/94-7/2000 | | NRHS |
| 8170 | MSRW | MISSISSIPPIAN RAILWAY COOPERATIVE, INC | | | PWRC |
| 8171 | MSRW | Mississippian Railway Cooperative | | | RSRV |
| 8172 | MSRX | Southeastern Industrial Enterprises, Inc. | added 10/2002; 7/2005; eliminated 10/2006 | | NAKINA |
| 8173 | MSRX | Modern Sanitary Rendering Co., Inc. | 4/1947-1/1952; eliminated 4/1954; 7/1954 | | NAKINA |
| 8174 | MSRX | Modern Sanitary Rendering Co., Inc. | 1/52; eliminated 4/54 | | NRHS |
| 8175 | MSRX | *MODERN SANITARY RENDERING CO., INC. | | | PWRC |
| 8176 | MSRX | *MISSOURI SOUTHEASTERN RAILROAD | | | PWRC |
| 8177 | MSRX | +SOUTHEASTERN INDUSTRIAL ENTERPRISES, INC. | | | PWRC |
| 8178 | MSRX | SOUTHEASTERN INDUSTRIAL ENTERPRISES | | | SCAC4 |
| 8179 | MSRY | MSR | | | SCAC4 |
| 8180 | MSS | Morris Air Service | IATA: KN, Callsign: Wasatch, Founded in 1984. Merged into Southwest Airlines in 1994. | USA | AVCODES |
| 8181 | MSS | Global Aviation S.a.r.l. | Callsign: Globe Master, | RIM | AVCODES |
| 8182 | MSS | Morris Air Service | | | ICAO1 |
| 8183 | MSS | | City: Malmö | S | TRAFFIC |
| 8184 | MSSA | METAUX SPECIAUX | | | PWRC |
| 8185 | MSSB | MOVING & STORAGE SOLUTIONS INC | | | SCAC4 |
| 8186 | MSSC | MAINE SOAPSTONE COMPANY INC | | | SCAC4 |
| 8187 | MSSD | MSSE | | | SCAC4 |
| 8188 | MSSG | MESSINA SHIPPING CO. LTD. | | | SCAC1 |
| 8189 | MSSG | MCCLAIN, S STONE CO INC | | | SCAC4 |
| 8190 | MSSH | MADISON SHIPMANAGEMENT SA | | | SCAC4 |
| 8191 | MSSK | METRO SHORE SERVICES | | | SCAC4 |
| 8192 | MSSL | MADARIS TRANSPORTATION LLC | | | SCAC4 |
| 8193 | MSSM | MASSE | | | SCAC4 |
| 8194 | MSSP | M & S SHIPPING LIMITED | | | SCAC4 |
| 8195 | MSSR | MOSS FARMS TRUCKING INC | | | SCAC4 |
| 8196 | MSSS | MASSOLO TRUCKING LLC | | | SCAC4 |
| 8197 | MSST | MTB TRUCK & BUS COLLISION | | | SCAC4 |
| 8198 | MSSU | MSSA | | F | BIC |
| 8199 | MSSU | MSSA SAS | | | SCAC4 |
| 8200 | MSSX | MSSA Co. | 7/2005 (not listed) | | NAKINA |
