| 2101 | INDU | Dorothea Marine Entreprise and Management | | | RSRV |
| 2102 | INDU | DOROTHEA MARINE ENTERPRISE | | | SCAC1 |
| 2103 | INDU | CONTAINER SERVICES COMPANY LLC | | | SCAC4 |
| 2104 | INDX | Indelpro, S.A. de C.V. | 7/2000-7/2005 (not listed) | | NAKINA |
| 2105 | INDX | Industrial Propane Supply, Inc. | added 10/1963; 7/1965-4/1970; eliminated 7/1974 | | NAKINA |
| 2106 | INDX | Industrial Oil Corp. | 7/1935-4/1938 | | NAKINA |
| 2107 | INDX | Industrial Oil Corp. | Apr-38 | | NRHS |
| 2108 | INDX | Industrial Propane Supply, Inc. | 7/65-4/70; eliminated 7/74 | | NRHS |
| 2109 | INDX | Indelpro, S.A. de C.V. | Jul-00 | | NRHS |
| 2110 | INDX | *INDUSTRIAL OIL CORP. | | | PWRC |
| 2111 | INDX | *INDUSTRIAL PROPANE SUPPLY, INC. | | | PWRC |
| 2112 | INDX | +INDELPRO SA DE CV | | | PWRC |
| 2113 | INDX | Indelpro de CV | | | RSRV |
| 2114 | INDX | INDELPRO S A DE C V | | | SCAC4 |
| 2115 | INDZ | INDUSTRIAL PARK | | | PWRC |
| 2116 | INDZ | INDEPENDENT DISPATCH INC | | | SCAC4 |
| 2117 | INE | Interamericana, S.A. de C.V. | Callsign: Amerinter, | MEX | AVCODES |
| 2118 | INE | INLAND EMPIRE DISTRIBUTION SYSTEMS | | | SCAC4 |
| 2119 | INEE | INDIAN TRAILS INC | | | SCAC4 |
| 2120 | INEG | INCE MOTOR FREIGHT, INC | | | SCAC1 |
| 2121 | INEG | INCE MOTOR FREIGHT | | | SCAC4 |
| 2122 | INEI | INTERNATIONAL EXPRESS INC | | | SCAC4 |
| 2123 | INEO | INTER-STATE OIL COMPANY | | | SCAC4 |
| 2124 | Ineos | Ineos Sverige AB | | SE | VKM |
| 2125 | INER | INTER | | | SCAC4 |
| 2126 | INET | INSIGHT NETWORK TRANSPORATION INC | | | SCAC4 |
| 2127 | INEX | INEOS Styrenics, Division of INEOS Americas LLC | added 10/2005 | | NAKINA |
| 2128 | INEX | INEOS STYRENICS, DIV. INEOS AMERICAS LLC | | | PWRC |
| 2129 | INEX | INEOS STYRENICS DIVISION OF INEOS A | | | SCAC4 |
| 2130 | INF | Inter Flight Ltd Oy | Callsign: Interfin, | FIN | AVCODES |
| 2131 | INF | Infinity Aviation | Callsign: Ozone, Ceased operations. | UAE | AVCODES |
| 2132 | INFE | INTERFLETES TRUCKING | | | SCAC4 |
| 2133 | INFF | INTERCALIFORNIAS FORWARDING | | | SCAC4 |
| 2134 | INFG | INTERNATIONAL FREIGHT SERVICES | | | SCAC4 |
| 2135 | INFI | INFINITY | | | SCAC4 |
| 2136 | INFK | INFINITY TRUCK LINES | | | SCAC4 |
| 2137 | INFL | I N F LTD | | | SCAC4 |
| 2138 | INFO | INTERCITY FREIGHT LINES | | | SCAC4 |
| 2139 | INFQ | INSULFOAM | | | SCAC4 |
| 2140 | INFR | Infraleuna | Real: ILIS | D | TRAFFIC |
| 2141 | INFRA | infra fürth gmbh | City: Fürth | D | TRAFFIC |
| 2142 | INFRA | Infranord AB | | SE | VKM |
| 2143 | InfraLeuna | InfraLeuna Infrastruktur und Service GmbH | Leuna | D | privat-bahn.de |
| 2144 | INFU | INNOFREIGHT SPEDITIONS GMBH | | A | BIC |
| 2145 | INFV | INFINITY NAVIGATION S A | | | SCAC4 |
| 2146 | INFX | Infineum USA L.P. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 2147 | INFX | Infineum USA L.P. | added 1/2000; 7/2000 | | NRHS |
| 2148 | INFX | INFINEUM USA, LTD. | | | PWRC |
| 2149 | INFX | Infineum USA | | | RSRV |
| 2150 | INFX | INFINEUM | | | SCAC4 |
| 2151 | INFY | INFINITY SPORTS IMPORTS INC | | | SCAC4 |
| 2152 | ING | Aeroingeniera Ltda | Callsign: Aeroinge, | RCH | AVCODES |
| 2153 | ING | Ingush Aviation Lines | Callsign: Ingush, | RUS | AVCODES |
| 2154 | ING | Aeroingenieria | | | ICAO1 |
| 2155 | INGC | INGRAM TRUCKING | | | SCAC4 |
| 2156 | INGD | INTERGRAPHICS DECAL LTD | | | SCAC4 |
| 2157 | INGE | INTEGRATED (LOCAL CARTAGE) | | | SCAC4 |
| 2158 | INGM | INGRAHAM, ROY TRUCKING | | | SCAC4 |
| 2159 | INGN | INDUSTRIAL ENGINEERS INC | | | SCAC4 |
| 2160 | INGO | INTERNATIONAL LOGISTICS SOLUTIONS I | | | SCAC4 |
| 2161 | INGQ | INDIGO INSTRUMENTS | | | SCAC4 |
| 2162 | INGR | INTEGRATED TRANSPORTATION SYSTEMS I | | | SCAC4 |
| 2163 | INGS | INTEGRA CASTINGS INC | | | SCAC4 |
| 2164 | INGT | INERGY TRANSPORTATION LLC | | | SCAC4 |
| 2165 | INGU | TRIFLEET LEASING HOLDING B.V. | | NL | BIC |
| 2166 | INGU | TRIFLEET LEASING (THE NETHERLANDS) | | | SCAC4 |
| 2167 | INGV | ING VICTOR RAFAEL GARCIA MENDEZ | | | SCAC4 |
| 2168 | INGX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 2169 | INGX | General Electric Railcar Services Corp. | added 10/1994; eliminated 1/2000 | | NAKINA |
| 2170 | INGX | Ingomar Packing Co. | added 7/1983; 1/1994; eliminated 10/1994 | | NAKINA |
| 2171 | INGX | Ingomar Packing Co. | 1/94; eliminated 10/94 | | NRHS |
| 2172 | INGX | General Electric Railcar Services Corp. | added 10/94; eliminated 1/2000 | | NRHS |
| 2173 | INGX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 2174 | INGX | *INGOMAR PACKING COMPANY | | | PWRC |
| 2175 | INGX | +GENERAL ELECTRIC RAIL SERVICES CORPORATION | | | PWRC |
| 2176 | INGX | Ingomar Packing (GE Rail Services Corporation) | | | RSRV |
| 2177 | INGX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 2178 | INGY | INTERNATIONAL SHIPPING COMPANY, INC | | | SCAC4 |
| 2179 | INHT | INTERNATIONAL HORSE TRANSPORT LIMIT | | | SCAC4 |
| 2180 | INI | Martini Airfreight Services Ltd. | Callsign: Martini, | GB | AVCODES |
| 2181 | INI | Initium Aviation | Callsign: Initium, | E | AVCODES |
| 2182 | INIE | INDIAN NATION EXPRESS L L C | | | SCAC4 |
| 2183 | INII | INTERSTATE INTERMODAL INC | | | SCAC4 |
| 2184 | ININ | INCONTRANS INC. | | | PWRC |
| 2185 | INIU | INNOCENTI DEPOSITI SPA | | I | BIC |
| 2186 | INJ | Interjet | Callsign: Injet, Founded in 1992 | GR | AVCODES |
| 2187 | INJM | INONTIME INC | | | SCAC4 |
| 2188 | INJO | INJECTION TECHNOLOGIES | | | SCAC4 |
| 2189 | INJP | INTERNATIONAL JET TRANSPORT LLC | | | SCAC4 |
| 2190 | INK | Sincom-Avia, Aviation Company | Callsign: Sincom Avia, | UA | AVCODES |
| 2191 | INK | Sincom-Avia | | | ICAO1 |
| 2192 | INKM | INK THROWERS DE MEXICO SA DE CV | | | SCAC4 |
| 2193 | INKOM | P.W. INTER-KOMTRANS SYLWESTER KOMISAREK | | PL | VKM |
| 2194 | INKT | INUKTUN SERVICES LTD | | | SCAC4 |
| 2195 | INKU | SEACUBE CONTAINERS LLC | | USA | BIC |
| 2196 | INKU | INTERPOOL LTD. | | | PWRC |
| 2197 | INKU | Interpool | | | RSRV |
| 2198 | INKU | SEACASTLE CONTAINER LEASING LLC | | | SCAC4 |
| 2199 | INL | Morgan Intertrades (Nig.) Limited | Callsign: Intertrades, | WAN | AVCODES |
| 2200 | INL | Intal Avia | Callsign: Intal Avia, Ceased Operations. | KS | AVCODES |
