| 1 | INR | Inter Air AB | Callsign: Interair, | S | AVCODES |
| 2 | INR | INAER Helicopteros, S.A. | IATA: UV, Callsign: Inaer Helicopteros, Name changed to Babcock Mission Critical Services Espa�a. Name changed from Helicopteros del Sureste, S.A. ICAO designator changed from HSE. | E | AVCODES |
| 3 | INR | Babcock Mission Critical Services España. | IATA: UV, Callsign: Inaer Helicopteros, Name changed from INAER Helicopteros, S.A. Previosly name changed from Helicopteros del Sureste, S.A. ICAO designator changed from HSE. | E | AVCODES |
| 4 | INR | Babcock Mission Critical Services España. | Callsign: Inaer Helicopteros, IATA Designator UV* recalled. Name changed from INAER Helicopteros, S.A. Previosly name changed from Helicopteros del Sureste, S.A. ICAO designator changed from HSE. | E | AVCODES |
| 5 | INR | | | IND | TRAFFIC |
| 6 | INR | INRAIL | | IT | VKM |
| 7 | INRAIL | INRAIL | | I | TRAFFIC |
| 8 | INRC | INTERSTAR INC | | | SCAC4 |
| 9 | INRD | The Indiana Rail Road Co. | added 4/1986; 1/1994; eliminated 7/1999; 7/2000-7/2005; added 1/2007 | | NAKINA |
| 10 | INRD | The Indiana Rail Road Co. | added 4/86; 1/94; eliminated 7/99; 7/2000 | | NRHS |
| 11 | INRD | INDIANA RAIL ROAD CO. | | | PWRC |
| 12 | INRD | Indiana Railroad | | | RSRV |
| 13 | INRD | The Indiana Rail Road Co. | | USA | TRAFFIC |
| 14 | INRE | INTROLET LTD | | | SCAC4 |
| 15 | INRI | INTERNATIONAL DRYER CORP | | | SCAC4 |
| 16 | INRJ | INTERSAC | | | SCAC4 |
| 17 | INRK | INTERSTATE TRUCKING INC | | | SCAC4 |
| 18 | INRL | INTERLAKE AGRI LTD | | | SCAC4 |
| 19 | INRN | INAS TRANSPORTATION INC | | | SCAC4 |
| 20 | INRO | I & N TRANSPORTATION INC | | | SCAC4 |
| 21 | INRS | INTERSTATE TRANSPORT INC | | | SCAC4 |
| 22 | INRT | INDIAN RIVER TRANSPORT CO | | | SCAC4 |
| 23 | INRU | LOGITEX INVEST, LLC | | RUS | BIC |
| 24 | INRW | INARME | | | SCAC4 |
| 25 | INRX | International Refining Co. | 8/1920-7/1923 | | NAKINA |
| 26 | INRX | INTERNATIONAL REFINING CO. | | | PWRC |
