| 1 | ER | DHL Airways, Inc. | ICAO: DHL, Callsign: Dahl, IATA Prefix: 423, Name changed to ASTAR Air Cargo | USA | AVCODES |
| 2 | ER | Sun d'Or International Airlines | ICAO: ERO, Callsign: Echo Romeo, | IL | AVCODES |
| 3 | ER | Don Everall (Aviation) Ltd. | Callsign: Everall, | GB | AVCODES |
| 4 | ER | ASTAR Air Cargo, Inc. | ICAO: DHL, Callsign: Dahl, IATA Prefix: 423, Ceased operations on 01 June 2012. Name changed from DHL Airways, Inc. | USA | AVCODES |
| 5 | ER | Serene Air (Private) Limited | ICAO: SEP, Founded in May 2016. AOC granted 18 March 2016. | PK | AVCODES |
| 6 | ER | Edelaraudtee | | EST | TRAFFIC |
| 7 | ER | Elektriraudtee | | EE | VKM |
| 8 | ERA | Eurocommander, S.A. | Callsign: Eurocommander, ICAO desiganator changed from ECT | E | AVCODES |
| 9 | ERAC | ERATH CARRIERS INC | | | SCAC3 |
| 10 | ERAG | ERIE AG-SERVICE | | | SCAC3 |
| 11 | ERAG | Eberhard Recycling AG | | CH | VKM |
| 12 | ERAI | ERA TRUCKING CO INC | | | SCAC3 |
| 13 | ERAIL | Eurailpool GmbH | | DE | VKM |
| 14 | ERAN | E TRANSSOURCE.COM INC | | | SCAC4 |
| 15 | ERAQ | ERA LOGISTICS INC | | | SCAC4 |
| 16 | ERAS | ERNST AIR SPEED TRUCKING | | | SCAC3 |
| 17 | ERAS | EUROSPORT RACING | | | SCAC4 |
| 18 | ERAT | ERATI SHIPPING INC. | | | SCAC3 |
| 19 | ERAT | ERATO SHIPPING LIMITED | | | SCAC4 |
| 20 | ERB | Erb Refrigerated Transport Co. | | USA | TRAFFIC |
| 21 | ERB | Rhenus-Keolis - eurobahn | | DE | VKM |
| 22 | ERBE | EARLY BIRD ENTERPRISES INC | | | SCAC3 |
| 23 | ERBE | ERB TRANSPORTATION SOLUTIONS INC | | | SCAC4 |
| 24 | ERBI | ERB INTERNATIONAL INC | | | SCAC4 |
| 25 | ERBL | ERB TRANSPORT LIMITED | | | SCAC3 |
| 26 | ERBL | ERB TRANSPORT LIMITED | | | SCAC4 |
| 27 | ERBQ | ERB WAREHOUSING CORP | | | SCAC3 |
| 28 | ERBQ | EXPRESS TERRESTRE DEL NORTE SA DE C | | | SCAC4 |
| 29 | ERBS | ERB, FRED & SON | | | SCAC3 |
| 30 | ERBU | CONTAINERS FOR BULK HAUL KIESERLING | | | PWRC |
| 31 | ERBU | Containers for Bulk Haul Kieserling | | | RSRV |
| 32 | ERBW | ERBS WRECKER SERVICE | | | SCAC3 |
| 33 | ERBW | ENTREPRISE FORESTIERE Y & F DOYON I | | | SCAC4 |
| 34 | ERC | Esso Resources Canada Ltd. | Callsign: Esso, | CDN | AVCODES |
| 35 | ERC | Esso Resources Canada | | | ICAO1 |
| 36 | ERC | EBENEZER RAIL CAR COMPANY | | | PWRC |
| 37 | ERC | Ethiopian Railway Corporation | | ETH | TRAFFIC |
| 38 | ERCA | ERICA EXPRESS | | | SCAC3 |
| 39 | ERCD | E R C DELIVERY SERVICE INC | | | SCAC4 |
| 40 | ERCH | EASTERN CHARTERS/TOURS INC | | | SCAC3 |
| 41 | ERCI | ELITE ROYAL COACH INC | | | SCAC3 |
| 42 | ERCK | ERICKSON TRANSPORT CORPORATION | | | SCAC3 |
| 43 | ERCK | ERICKSON TRANSPORT CORPORATION | | | SCAC4 |
| 44 | ERCM | ERIC MOTOR LINES INC | | | SCAC3 |
| 45 | ERCM | ERABLIERE RICHARD CAMERON | | | SCAC4 |
| 46 | ERCS | ERICK & SONS TRANSPORTATION INC | | | SCAC3 |
| 47 | ERCS | EMPAQUE RIO COLORADO | | | SCAC4 |
| 48 | ERCT | ERICKSON TRUCKING | | | SCAC3 |
| 49 | ERCU | HICRI ERCILI | | TR | BIC |
| 50 | ERCU | ERCO INDUSTRIES LTD | | | PWRC |
| 51 | ERCU | Erco Industries | | | RSRV |
| 52 | ERCU | ERCO INDUSTRIES LTD | | | SCAC3 |
| 53 | ERCU | ERCO INDUSTRIES LTD | | | SCAC4 |
| 54 | ERCX | EXCEL Railcar Corp. | added 4/1995; 7/2000-7/2005 | | NAKINA |
| 55 | ERCX | EXCEL Transnational, Inc. | added 7/1989; 1/1994; eliminated 4/1995 | | NAKINA |
| 56 | ERCX | Excel Railcar Corp. | added 10/1980; eliminated 7/1989 | | NAKINA |
| 57 | ERCX | Pennzoil United, Inc. | added 7/1970, eliminated 4/1973 | | NAKINA |
| 58 | ERCX | Elk Refining Co. | 8/1920-4/1970; eliminated 7/1970 | | NAKINA |
| 59 | ERCX | Elk Refining Co. | 4/38-4/70 | | NRHS |
| 60 | ERCX | Pennzoil United, Inc. | eliminated 4/73 | | NRHS |
| 61 | ERCX | Excel Railcar Corp. | added 10/80; eliminated 7/89 | | NRHS |
| 62 | ERCX | EXCEL Transnational, Inc. | added 7/89; 1/94; eliminated 4/95 | | NRHS |
| 63 | ERCX | EXCEL Railcar Corp. | added 4/95; 7/2000 | | NRHS |
| 64 | ERCX | *PENNZOIL UNITED, INC. [ELK REFINING CO.] | | | PWRC |
| 65 | ERCX | +EXCEL RAILCAR CORPORATION (EXCEL TRANSNATIONAL, INC.) | | | PWRC |
| 66 | ERCX | Excel Railcar Corporation | | | RSRV |
| 67 | ERCX | ELK REFINING CO | | | SCAC3 |
| 68 | ERCX | EXCEL RAILCAR CORPORATION | | | SCAC4 |
| 69 | ERCX | Excel Railcar Corp. | | USA | TRAFFIC |
| 70 | ERD | Servicios Empresariales Y Administrativos, S.A. de C.V. | Callsign: Seread, | MEX | AVCODES |
| 71 | ERD | Eiffage Rail Deutschland GmbH | | DE | VKM |
| 72 | ERDB | ERDNER BROS INC | | | SCAC3 |
| 73 | ERDE | ERDMAN TRUCKING | | | SCAC3 |
| 74 | ERDG | EARLS DISTRIBUTING INC | | | SCAC3 |
| 75 | ERDH | ERDAHL, HARLAN TRUCKING INC | | | SCAC3 |
| 76 | ERDI | ERIN DISTRIBUTORS INC | | | SCAC3 |
| 77 | ERDL | ERDAHL BROTHERS TRUCKING INC | | | SCAC3 |
| 78 | ERDM | ERDMANN CARTAGE | | | SCAC3 |
| 79 | ERDR | ERIKA DE REYNOSA S A DE C | | | SCAC4 |
| 80 | ERDT | ERDMANN, R TRUCKING INC | | | SCAC3 |
| 81 | ERDX | Merchants Despatch Transportation Co. | 7/1937-1/1980; eliminated 10/1984 | | NAKINA |
| 82 | ERDX | Eastern Refrigerator Despatch (Merchants Despatch Transportation Co.) | 7/1935 | | NAKINA |
| 83 | ERDX | Eastern Refrigerator Despatch | 7/1930-7/1932 | | NAKINA |
| 84 | ERDX | Eastern Refrigerator Despatch (Merchants Despatch Transportation Co.) | Apr-38 | | NRHS |
| 85 | ERDX | Merchants Despatch Transportation Co. | 1/52-1/80; eliminated 10/84 | | NRHS |
| 86 | ERDX | MERCHANTS DESPATCH TRANSPORTATION CORP.[EASTERN REFRIGERATOR DESPATCH] | | | PWRC |
| 87 | ERDX | Merchants Despatch Transportation Corporation | | | RSRV |
| 88 | ERE | Erie Airways, Inc. | Callsign: Air Erie, | USA | AVCODES |
| 89 | ERE | Erie Airways | | | ICAO1 |
| 90 | ERE | Erdölraffinerie Emsland | City: Holthausen bei Lingen | D | TRAFFIC |
| 91 | ERED | ESCALERA RODRIGUEZ, EDUARDO | | | SCAC4 |
| 92 | EREE | ER ENTERPRISES INC | | | SCAC4 |
| 93 | EREF | EXPRESS REFRIGERADOS DEL NORTE SA D | | | SCAC4 |
| 94 | EREI | ERDNER, EARL L INC | | | SCAC3 |
| 95 | EREI | EIGHT (8) ROLLIN ENTERPRISE INC | | | SCAC4 |
| 96 | EREL | ERICH RENTAL INC | | | SCAC3 |
| 97 | EREL | ERICH RENTAL INC | | | SCAC4 |
| 98 | EREN | ERIE ENTERPRISES INC | | | SCAC3 |
| 99 | ERES | Erie Western Ry. Co. | added 1/1978; added 7/1978; eliminated 10/1979 | | NAKINA |
| 100 | ERES | Erie Western Ry. Co. | added 1/78; added 7/78 | | NRHS |
