| 2601 | EKBT | EKBERG, ROY TRUCKING | | | SCAC3 |
| 2602 | EKBT | ENW TRUCKING INC | | | SCAC4 |
| 2603 | EKBU | CONTMASTER | | RUS | BIC |
| 2604 | EKBU | KEISERLING (UK), LTD | | | PWRC |
| 2605 | EKBU | Keiserling | | | RSRV |
| 2606 | EKC | East Kansas City Aviation, Inc. | Callsign: Blue Goose, | USA | AVCODES |
| 2607 | EKC | East Kansas City Aviation | | | ICAO1 |
| 2608 | EKCO | EKCO METALS | | | SCAC3 |
| 2609 | EKCO | EKCO METALS | | | SCAC4 |
| 2610 | EKCR | ECKSTINE, CHARLES R | | | SCAC3 |
| 2611 | EKCR | EASTMARK ASSOCIATES INC | | | SCAC4 |
| 2612 | EKCU | VAN DEN BOSCH TRANSPORTE GMBH | | A | BIC |
| 2613 | EKCU | FRIEDRICH EISENKECK SILOTRANSPORTE | | | SCAC3 |
| 2614 | EKCU | SILO-TANK TRANSPORTE GMBH | | | SCAC4 |
| 2615 | EKCX | Eastman Kodak Co. | 7/1935-1/1952; eliminated 7/1953 | | NAKINA |
| 2616 | EKCX | Eastman Kodak Co. | 4/38-1/52 | | NRHS |
| 2617 | EKCX | EASTMAN KODAK CO. | | | PWRC |
| 2618 | EKCZ | EAST KENTUCKY COAL DOCKS | | | PWRC |
| 2619 | EKDE | ELKINK, DEZ | | | SCAC4 |
| 2620 | EKDF | ECKERD FLEET INC | | | SCAC3 |
| 2621 | EKDN | ERICKSON, DALLAS E INC | | | SCAC4 |
| 2622 | EKEH | EIBEN, KEITH | | | SCAC4 |
| 2623 | EKEL | ELMA-K ENTERPRISES LTD | | | SCAC4 |
| 2624 | EKER | ERICKEYAS TRUCKING | | | SCAC4 |
| 2625 | EKFS | ECKERT FARM SUPPLY | | | SCAC3 |
| 2626 | EKG | Afric Aviation | IATA: L8, | G | AVCODES |
| 2627 | EKGL | EDMAN TRUCKING LTD | | | SCAC4 |
| 2628 | EKGN | ENNA TRUCKING COMPANY | | | SCAC3 |
| 2629 | EKGT | EKBERG, GLENN E TRUCKING | | | SCAC3 |
| 2630 | EKGT | EKG TRUCKING INC | | | SCAC4 |
| 2631 | EKHN | ELKHORN EXPRESS | | | SCAC4 |
| 2632 | EKHU | EURO-KAI KG | | | SCAC3 |
| 2633 | EKHW | E & K HAZARDOUS WASTE SERVICES INC | | | SCAC3 |
| 2634 | EKIC | E K INC | | | SCAC4 |
| 2635 | EKII | ERICKSON IMPLEMENT INC | | | SCAC4 |
| 2636 | EKIN | EAKIN TRUCKING | | | SCAC3 |
| 2637 | EKIQ | ENTREPRISE KEVMIG INC | | | SCAC4 |
| 2638 | EKJ | Equajet | Callsign: Equajet, | RCB | AVCODES |
| 2639 | EKJ | Ängelholm - Klippan Järnväg (Pyttebanan) | 1904 - 1928 | S | svenska-lok.se |
| 2640 | EKJ | Ängelholm - Klippan Järnväg (Pyttebanan) | 1904 - 1928 | S | TRAFFIC |
| 2641 | EKJD | EKSTROM, J D INC | | | SCAC3 |
| 2642 | EKKW | Europejskie Konsorcjum Kolejowe WAGON Sp. z o.o. | | PL | VKM |
| 2643 | EKLC | ECKLUND CARRIERS INC | | | SCAC3 |
| 2644 | EKLD | EKLUND TRUCKING | | | SCAC3 |
| 2645 | EKLF | ECKLOF TRANSPORTATION CO | | | SCAC3 |
| 2646 | EKLQ | ECKLER TRUCKING | | | SCAC3 |
| 2647 | EKLU | KAWASAKI KISEN KAISHA LTD - K LINE | | J | BIC |
| 2648 | EKLU | K LINE | | | PWRC |
| 2649 | EKLU | K Line | | | RSRV |
| 2650 | EKLU | KAWASAKI KISEN KAISHA LTD | | | SCAC4 |
| 2651 | EKMT | E K MACHINE & TOOL INC | | | SCAC4 |
| 2652 | EKMX | Emmons Coal Mining Co. | 7/1923 | | NAKINA |
| 2653 | EKMX | EMMONS COAL MINING CO. | | | PWRC |
| 2654 | EKNA | EUREKA SPRINGS & NORTH ARKANSAS RAILROAD | | | PWRC |
| 2655 | EKNE | ECKSTROM, NEIL TRUCKING INC | | | SCAC3 |
| 2656 | EKNK | ERIKSON TRUCKING | | | SCAC4 |
| 2657 | EKNS | ECKHART & SONS | | | SCAC3 |
| 2658 | EKO | Aeroeko | Callsign: Concise, | KZ | AVCODES |
| 2659 | EKO | ECO Airlines SIA | Callsign: Ecoair, | LV | AVCODES |
| 2660 | EKO | EKO Transportgesellschaft mbH | Eisenhüttenstadt (EKO = Eisenhüttenkombinat Oder) | D | privat-bahn.de |
| 2661 | EKO | EKO Transportgesellschaft mbH | | D | TRAFFIC |
| 2662 | EKO | ArcelorMittal Eisenhüttenstadt Transport GmbH | | DE | VKM |
| 2663 | EKOBG | EKO Bulgaria | | BG | VKM |
| 2664 | EKOH | EKOH INC | | | SCAC3 |
| 2665 | EKOL | EKO LOGISTICS CARGO LLC | | | SCAC4 |
| 2666 | EKOM | EKO MANUFACTURING CORP | | | SCAC4 |
| 2667 | EKOR | EUROKOR LOGISTICS B V | | | SCAC4 |
| 2668 | EKOSK | ŽOS-EKO, s.r.o. | | SK | VKM |
| 2669 | EKOU | FORTUM WASTE SOLUTIONS OY | | FIN | BIC |
| 2670 | EKP | Small Enterprise (Ecopatroil) | Callsign: Ecopatrol, Ceased operations | UA | AVCODES |
| 2671 | EKPI | EMPIRE KOSHER POULTRY INC | | | SCAC3 |
| 2672 | EKPY | EMPIRE KOSHER POULTRY INC | | | SCAC4 |
| 2673 | EKRE | EKRE TRUCKING | | | SCAC3 |
| 2674 | EKRQ | ECKERTS VAN & STORAGE | | | SCAC3 |
| 2675 | EKRQ | ECKERT VAN & STORAGE | | | SCAC4 |
| 2676 | EKRT | ECKERT TRUCK LINE | | | SCAC3 |
| 2677 | EKRV | ELK VALLEY RANCHES INC | | | SCAC4 |
| 2678 | EKSO | ERICKSON TRUCKING | | | SCAC3 |
| 2679 | EKSPR | EKSPER VAGON IŞLETMELERI A.Ş. | | TR | VKM |
| 2680 | EKSR | ERICKSON, RON | | | SCAC4 |
| 2681 | EKSX | National Car Co. | eliminated 1/1968 | | NAKINA |
| 2682 | EKSX | E. Kahn's Sons Co., Cincinnati, Ohio (National Car Co.) | 10/1966 | | NAKINA |
| 2683 | EKSX | Fruit Growers Express Co. | 7/1937-7/1965 | | NAKINA |
| 2684 | EKSX | The E. Kahn's Sons Co. | 7/1930-7/1935 | | NAKINA |
| 2685 | EKSX | E. Kahn's Sons Co. (National Car Co.) | Apr-38 | | NRHS |
| 2686 | EKSX | Fruit Growers Express Co. | 1/52-7/65 | | NRHS |
| 2687 | EKSX | E. Kahn's Sons Co., Cincinnati, Ohio (National Car Co.) | Oct-66 | | NRHS |
| 2688 | EKSX | National Car Co. | eliminated 1/68 | | NRHS |
| 2689 | EKSX | E. KAHN'S SONS CO. (FRUIT GROWERS EXPRESS; NATIONAL CAR CO.) | | | PWRC |
| 2690 | EKSX | E. Kahn's Sons Co., Cincinnati, Ohio (National Car Co.) | later: Fruit Growers Express Co. | USA | TRAFFIC |
| 2691 | EKT | European SAO Limited | Callsign: Blue Knight, | M | AVCODES |
| 2692 | EKTC | ECK TRUCKING COMPANY INC | | | SCAC3 |
| 2693 | EKTG | E & K TRUCKING COMPANY | | | SCAC3 |
| 2694 | EKTI | E & K TRUCKING INC | | | SCAC4 |
| 2695 | EKTQ | E K TRUCKING INC | | | SCAC4 |
| 2696 | EKTR | E & K TRUCKING | | | SCAC4 |
| 2697 | EKTT | ECKART TRUCKING INC | | | SCAC3 |
| 2698 | EKTT | ERICKSON TRANSPORT LLC | | | SCAC4 |
| 2699 | EKTU | E KAY TECHNOLOGY CO LTD | | RC | BIC |
| 2700 | EKTU | EKAY TECHNOLOGY CO LTD | | | SCAC4 |
