| 3901 | AECC | ARKANSAS ELECTRIC CO. | | | PWRC |
| 3902 | AECD | AMERICAN CONSOLIDATORS INC | | | SCAC3 |
| 3903 | AECE | ATLANTIC FUEL INC | | | SCAC4 |
| 3904 | AECG | AERO CARGO INC | | | SCAC3 |
| 3905 | AECH | ANDRES EXPRESS CORP | | | SCAC4 |
| 3906 | AECJ | A E CONSOLIDATED INC | | | SCAC3 |
| 3907 | AECK | ACE COURIER | | | SCAC3 |
| 3908 | AECL | ALLEN, C L TRUCKING | | | SCAC3 |
| 3909 | AECL | ALLEN, C L TRUCKING | | | SCAC4 |
| 3910 | AECM | AMERICAN CLEANING & MAINTENANCE ENT | | | SCAC3 |
| 3911 | AECM | AMERICAN CLEANING & MAINTENANCE ENT | | | SCAC4 |
| 3912 | AECN | AERO CORPORATION | | | SCAC3 |
| 3913 | AECN | ANDERSON EXPRESS | | | SCAC4 |
| 3914 | AECO | AMERICAN ENVIRONMENTAL CONTAINER CO | | | SCAC4 |
| 3915 | AECP | AMERICAN EXCAVATING CORP | | | SCAC4 |
| 3916 | AECQ | ATEC SYSTEMS LTD | | | SCAC3 |
| 3917 | AECQ | ATEC TRANSPORTATION LLC | | | SCAC4 |
| 3918 | AECR | AGRICOLA EL CONSUELO | | | SCAC4 |
| 3919 | AECR | Atlantic and East Carolina Ry. Co. | | USA | TRAFFIC |
| 3920 | AECT | AMERICAN TRANSPORT DIV | | | SCAC3 |
| 3921 | AECT | ACE BORDER SOLUTIONS LLC | | | SCAC4 |
| 3922 | AECU | AE & CI LTD | | | SCAC3 |
| 3923 | AECU | SOUTH AFRICAN NUCLEAR ENERGY CORP, | | | SCAC4 |
| 3924 | AECV | AMERI-CAN AUTO TRANSPORT INC | | | SCAC3 |
| 3925 | AECV | ADVANCED FREIGHT BROKERS LLC | | | SCAC4 |
| 3926 | AECX | Associated Electric Cooperative, Inc. | added 10/1994; 7/2000-7/2005 | | NAKINA |
| 3927 | AECX | American Extract Co. | 7/1930-10/1957; eliminated 10/1959 | | NAKINA |
| 3928 | AECX | American Extract Co. | 4/38-10/57; eliminated 10/59 | | NRHS |
| 3929 | AECX | Associated Electric Cooperative, Inc. | added 10/94; 7/2000 | | NRHS |
| 3930 | AECX | *AMERICAN EXTRACT CO. | | | PWRC |
| 3931 | AECX | +ASSOCIATED ELECTRIC COOPERATIVE, INC. | | | PWRC |
| 3932 | AECX | Associated Electric Cooperative | | | RSRV |
| 3933 | AECX | ASSOCIATED ELECTRIC COOPERATIVE INC | | | SCAC4 |
| 3934 | AECX | Associated Electric Cooperative, Inc. | | USA | TRAFFIC |
| 3935 | AECY | AMERICAN CARGO SYSTEMS INC | | | SCAC3 |
| 3936 | AECZ | AMERICAL ELECTRIC COAL | | | PWRC |
| 3937 | AED | Aernord | Callsign: Aernspa, | I | AVCODES |
| 3938 | AED | Aerotrans Airlines, Closed Joint-Stock Company | | RUS | AVCODES |
| 3939 | AED | Aie Experience Flight | Callsign: Aie Experience, | GB | AVCODES |
| 3940 | AED | EADS CASA | | E | AVCODES |
| 3941 | AED | Aerotrans Airlines | | | ICAO1 |
| 3942 | AED | Alpine-Energie Deutschland GmbH | | DE | VKM |
| 3943 | AEDA | AMMERIDA INC | | | SCAC3 |
| 3944 | AEDB | AMERICAN DISTRIBUTION CO INC | | | SCAC3 |
| 3945 | AEDC | AUTO EXPRESS DE CARGA VILOBA S A DE | | | SCAC4 |
| 3946 | AEDD | ANEL ESTRADA, DENISSE | | | SCAC4 |
| 3947 | AEDE | ALEJANDRE ORTIZ, MARIO ALEJANDRO | | | SCAC4 |
| 3948 | AEDF | A E D INC | | | SCAC3 |
| 3949 | AEDG | AUTO LINEAS EDGAR S DE R L DE CV (M | | | SCAC4 |
| 3950 | AEDH | ACE LOGISTICS LLC | | | SCAC4 |
| 3951 | AEDI | ACE DELIVERY SERVICE INC | | | SCAC3 |
| 3952 | AEDL | AERO DELIVERY INC | | | SCAC3 |
| 3953 | AEDL | AMERICAN EAGLE LINES (INTERMODAL) | | | SCAC4 |
| 3954 | AEDM | ALLIED TRANSPORT SYSTEM (USA) INC | | | SCAC4 |
| 3955 | AEDP | AEL CORP | | | SCAC4 |
| 3956 | AEDQ | ATLANTIC EXPOSITION DRAYAGE INC | | | SCAC3 |
| 3957 | AEDQ | ALLIED LOGISTICS LLC | | | SCAC4 |
| 3958 | AEDS | AMERICAN DISTRIBUTION SERVICE INC | | | SCAC3 |
| 3959 | AEDW | ALT, EDWARD | | | SCAC3 |
| 3960 | AEDW | ARNDT, EDWARD | | | SCAC4 |
| 3961 | AEE | Aegean Airlines, S.A. | IATA: A3, Callsign: Aegean, IATA Prefix: 390, Name changed from Aegean Aviation S.A. Merger with Cronus Airlines X5/CUS | GR | AVCODES |
| 3962 | AEE | Air Europe Express | IATA: AX, Callsign: Euroexpress, Formerly Connectair | GB | AVCODES |
| 3963 | AEE | Aegean Aviation, S.A. | IATA: A3, Callsign: Aegean, IATA Prefix: 390, Name changed to Aegean Airlines S.A. Founded in 1987. | GR | AVCODES |
| 3964 | AEE | Aegean Airlines | IATA: A3 | | ICAO1 |
| 3965 | AEE | Aegean Airlines | | GR | TRAFFIC |
| 3966 | AEEC | ALPINE EXPRESS CORP | | | SCAC3 |
| 3967 | AEEC | ADVANTAGE EXPRESS INC | | | SCAC4 |
| 3968 | AEED | ALEET EXPEDITING | | | SCAC4 |
| 3969 | AEEN | A & A TRANSPORTATION RESOURCES INC | | | SCAC4 |
| 3970 | AEEP | AMERICAN EAGLE EXPRESS INC | | | SCAC3 |
| 3971 | AEEP | AMERICAN EAGLE EXPRESS INC | | | SCAC4 |
| 3972 | AEES | AERONAUTICS EXPRESS OF ILLINOIS INC | | | SCAC3 |
| 3973 | AEEU | Alion Energy | | | RSRV |
| 3974 | AEF | Aero Lloyd Flugreisen GmbH & Co. | IATA: YP, Callsign: Aero Lloyd, Ceased operations on 16 October 2003. IATA designator changed from LL | D | AVCODES |
| 3975 | AEF | Aero Lloyd Flugreisen GmbH & Co. | IATA: LL, Callsign: Aero Lloyd, Founded on 20 December 1980. Commenced operations in March 1981. IATA designator changed to YP | D | AVCODES |
| 3976 | AEF | Aerea | | E | AVCODES |
| 3977 | AEFA | A E FREIGHT SERVICES | | | SCAC4 |
| 3978 | AEFB | AT EASE FREIGHT BROKERS LLC | | | SCAC4 |
| 3979 | AEFC | AMERICAN FREIGHT CARRIER SERVICES I | | | SCAC3 |
| 3980 | AEFC | AMERICAN FREIGHT CARRIER SERVICES I | | | SCAC4 |
| 3981 | AEFL | A & E FUEL CORP | | | SCAC4 |
| 3982 | AEFM | AMERICAN FAMILY MOVERS | | | SCAC3 |
| 3983 | AEFN | AEF FREIGHT INC | | | SCAC4 |
| 3984 | AEFR | Aurora Elgin & Fox River Electric | 1/1994-7/2005 | | NAKINA |
| 3985 | AEFR | Aurora Elgin & Fox River Electric | 1/94-7/2000 | | NRHS |
| 3986 | AEFR | AURORA ELGIN & FOX RIVER ELECTRIC CO. | | | PWRC |
| 3987 | AEFR | Aurora, Elgin and Fox River Electric | | | RSRV |
| 3988 | AEFS | A E F - SELOVER TRANSPORTATION INC | | | SCAC3 |
| 3989 | AEFT | ACCELERATED TRANSPORT INC | | | SCAC4 |
| 3990 | AEFV | A-ONE (A-1) FIRST CLASS MOVING & ST | | | SCAC3 |
| 3991 | AEFV | A-ONE (A-1) FIRST CLASS-VIKING MOVI | | | SCAC4 |
| 3992 | AEG | Aerofumigaciones Sam, S.A. | Callsign: Fumigaciones Sam, | RCH | AVCODES |
| 3993 | AEG | Air East | Callsign: Air East, | SK | AVCODES |
| 3994 | AEG | Airest Inc. | Callsign: Airest Cargo, Founded 2002 | EST | AVCODES |
| 3995 | AEG | Aerofumigaciones Sam | | | ICAO1 |
| 3996 | AEGA | AE EAGLE AMERICA INC | | | SCAC4 |
| 3997 | AEGC | AMERICAN EAGLE CORP | | | SCAC3 |
| 3998 | AEGF | A & E LOGISTICS INC | | | SCAC4 |
| 3999 | AEGG | AMERICCAN EAGLE TRUCKING INC | | | SCAC3 |
| 4000 | AEGG | AMERICAN EAGLE LOGISTICS LLC | | | SCAC4 |
