| 1 | ECC | ECA (Europe Continental Airways) d/b/a/ Crossair Europe | IATA: QE, Callsign: Cigigne, Name changed from Europe Continental Airways (ECA) | CH | AVCODES |
| 2 | ECC | Europe Continental Airways (ECA) | IATA: QE, Callsign: Cigigne, Name changed to ECA (Europe Continental Airways) d/b/a/ Crossair Europe. Name changed from European Continental Airways (ECA) | CH | AVCODES |
| 3 | ECC | European Continental Airways (ECA) | IATA: QE, Callsign: Cigigne, Name changed to Europe Continental Airways (ECA) | CH | AVCODES |
| 4 | ECC | Éclair Aviation | Callsign: �clair, | CZ | AVCODES |
| 5 | ECC | Crossair Europe | IATA: QE | | ICAO1 |
| 6 | ECC | EMPIRE COKE COMPANY | | | PWRC |
| 7 | ECC | EAST COAST CARRIERS CONFERENCE | | | SCAC4 |
| 8 | ECCA | ECCA FREIGHT SYSTEMS NEW YORK | | | SCAC3 |
| 9 | ECCA | EXPRESS LOGISTICS INC | | | SCAC4 |
| 10 | ECCD | ENGLISH CONSTRUCTION CO INC | | | SCAC4 |
| 11 | ECCE | EXPRESS CONNECTION CARRIERS INC | | | SCAC4 |
| 12 | ECCG | EXCEL CARTAGE INC | | | SCAC3 |
| 13 | ECCG | ELMAN TRUCKING INC | | | SCAC4 |
| 14 | ECCH | EFFICIENCY COMPANIES INC | | | SCAC4 |
| 15 | ECCI | EXHIBITION CONTRACTORS CO INC | | | SCAC3 |
| 16 | ECCI | ECONOCARIBE CONSOLIDATORS INC | | | SCAC4 |
| 17 | ECCM | EAGLE CAP CAMPERS INC | | | SCAC4 |
| 18 | ECCO | EAST CAROLINA CARTAGE COMPANY INC | | | SCAC3 |
| 19 | ECCO | Ecco Rail | | PL | TRAFFIC |
| 20 | ECCO | ECCO-Cargo-Rail-GmbH | | DE | VKM |
| 21 | ECCOR | Ecco Rail Sp. z o.o. | | PL | VKM |
| 22 | ECCP | ECOLE CORP | | | SCAC3 |
| 23 | ECCR | ECT CORP | | | SCAC3 |
| 24 | ECCR | ECT CORPORATION | | | SCAC4 |
| 25 | ECCS | EAST COAST TRANSPORT INC | | | SCAC3 |
| 26 | ECCS | EARTHLINK CARGO AND CUSTOMS SERVICE | | | SCAC4 |
| 27 | ECCT | ECCARIUS TRUCKING | | | SCAC3 |
| 28 | ECCU | ALOREM | | F | BIC |
| 29 | ECCX | Ethyl Canada Inc. | added 1/1982; 1/1994-7/2000; eliminated 10/2004; 7/2005 (not listed); added 4/2006 | | NAKINA |
| 30 | ECCX | Ethyl Corp. of Canada Ltd. | added 7/1956; 10/1957-1/1980; eliminated 1/1982 | | NAKINA |
| 31 | ECCX | Ethyl Corp. of Canada Ltd. | added 7/56; 10/57-1/80; eliminated 1/82 | | NRHS |
| 32 | ECCX | Ethyl Canada Inc. | added 1/82; 1/94-7/2000 | | NRHS |
| 33 | ECCX | ETHYL CANADA INC. | | | PWRC |
| 34 | ECCX | Ethyl Canada | | | RSRV |
| 35 | ECCX | ETHYL CANADA INC. | | | SCAC4 |
| 36 | ECCY | ELK CREEK COLONY | | | SCAC4 |
