| 13901 | ASVQ | ADVANCED TAXIDERMY & WILDLIFE DESIG | | | SCAC4 |
| 13902 | ASVS | ALLSTATE VAN & STORAGE CORP | | | SCAC3 |
| 13903 | ASVS | ALLSTATE VAN & STORAGE CORP | | | SCAC4 |
| 13904 | ASVT | ALL SERVICES TRANSPORT INC | | | SCAC3 |
| 13905 | ASVT | ALL SERVICES TRANSPORT INC | | | SCAC4 |
| 13906 | ASVU | AARDAL OG SUNNDAL VERK A/S | | | SCAC3 |
| 13907 | ASVV | AST DISTRIBUTION LLC | | | SCAC4 |
| 13908 | ASVW | ALL STATE VAN LINES INC | | | SCAC3 |
| 13909 | ASVY | A & S DRIVE AWAY | | | SCAC3 |
| 13910 | ASVY | ALL SERVICE HANDLING | | | SCAC4 |
| 13911 | ASW | Air Southwest Ltd. | Callsign: AirSouthWest, | CDN | AVCODES |
| 13912 | ASW | Asia Airways | Callsign: Asiaways, | TJ | AVCODES |
| 13913 | ASW | Air Southwest Ltd. | | | ICAO1 |
| 13914 | ASWA | ARMSTRONG, WILLIAM A | | | SCAC3 |
| 13915 | ASWA | ASW AMERICA LLC | | | SCAC4 |
| 13916 | ASWA | Southwest Airlines | Real: SWA | USA | TRAFFIC |
| 13917 | ASWC | ATLANTIC SEAWAYS CORP MONROVIA LIB | | | SCAC3 |
| 13918 | ASWC | AMERICAN SPRING WIRE CORP | | | SCAC4 |
| 13919 | ASWD | AMARANTH STONEWARE LTD | | | SCAC4 |
| 13920 | ASWE | ADRIENNE SHIPPING LINE INC | | | SCAC4 |
| 13921 | ASWF | AMERICAN STAGECOACH INC | | | SCAC4 |
| 13922 | ASWG | ASSOCIATED WHOLESALE GROCERS INC | | | SCAC3 |
| 13923 | ASWI | AST, WILBUR E INC | | | SCAC3 |
| 13924 | ASWI | ATLAS SIGN & AWNING COMPANY | | | SCAC4 |
| 13925 | ASWJ | ASAP TRUCKLINE LTD | | | SCAC4 |
| 13926 | ASWK | AMBER STAIRWAYS INC | | | SCAC4 |
| 13927 | ASWL | AMSTEL SHIPPING COMPANY LIMITED | | | SCAC3 |
| 13928 | ASWL | ALLEN SHELLFISH LLC | | | SCAC4 |
| 13929 | ASWL | Schneider & Schneider GmbH | | DE | VKM |
| 13930 | ASWM | ANDERSON, WILLIAM L | | | SCAC4 |
| 13931 | ASWN | AMERICAN SWEETENERS INC | | | SCAC3 |
| 13932 | ASWO | APOLLO SOUTHWEST INC | | | SCAC4 |
| 13933 | ASWQ | AL'S TOWING & STORAGE INC | | | SCAC4 |
| 13934 | ASWR | ALS TOWING SERVICE INC | | | SCAC3 |
| 13935 | ASWS | ASHFORD WRECKER SERVICE | | | SCAC3 |
| 13936 | ASWS | Arriva Surrey & West Sussex | | GB | TRAFFIC |
| 13937 | ASWU | AROS LINE AB | | | SCAC3 |
| 13938 | ASWV | ALL STAR TRANSPORTATION | | | SCAC4 |
| 13939 | ASWW | AIR SEA WORLD WIDE LOGISTIC LTD | | | SCAC3 |
| 13940 | ASWW | AIR SEA WORLDWIDE LOGISTICS LTD | | | SCAC4 |
| 13941 | ASWX | American Steel & Wire Co. | 8/1920-1/1943 | | NAKINA |
| 13942 | ASWX | American Steel & Wire Co. | Apr-38 | | NRHS |
| 13943 | ASWX | AMERICAN STEEL & WIRE CO. | | | PWRC |
| 13944 | ASWY | ANT SEAWAYS LIMITED | | | SCAC3 |
| 13945 | ASX | Air Special | Callsign: Airspec, | CZ | AVCODES |
| 13946 | ASX | Air Special | | | ICAO1 |
| 13947 | ASX | American Smelting & Refining Co. | 7/1935-7/1965; eliminated 4/1966 | | NAKINA |
| 13948 | ASX | American Smelting & Refining Co. | 4/38-7/65; eliminated 4/66 | | NRHS |
| 13949 | ASX | AMERICAN SMELTING & REFINING CO. (ELIMINATED 4/1966) | | | PWRC |
| 13950 | ASXA | ALL-STATE EXPRESS INC | | | SCAC4 |
| 13951 | ASXC | AMS EXPRESS CORP | | | SCAC4 |
| 13952 | ASXE | ASH, D EXPRESS | | | SCAC3 |
| 13953 | ASXF | ALL STAR EXPRESS INC | | | SCAC4 |
| 13954 | ASXI | AIR SEA EXPRESS INC. | | | SCAC3 |
| 13955 | ASXJ | ABLS TRANSPORT | | | SCAC4 |
| 13956 | ASXK | A S A P TRANS INC | | | SCAC4 |
| 13957 | ASXO | A S EXPRESS | | | SCAC4 |
| 13958 | ASXP | A S A P EXPRESS | | | SCAC4 |
| 13959 | ASXQ | ASSOCIATED TRANSPORT INC | | | SCAC4 |
| 13960 | ASXR | ALL STATES XPRESS INC | | | SCAC3 |
| 13961 | ASXT | ASAP EXPEDITING INC | | | SCAC4 |
| 13962 | ASXV | AIR SURFACE EXPRESS TAMPA LLC | | | SCAC4 |
| 13963 | ASXW | AGS TRANSPORT LLC | | | SCAC4 |
| 13964 | ASY | Royal Australian Air Force | Callsign: Aussie, | AUS | AVCODES |
| 13965 | ASY | Royal Australian Air Force | | | ICAO1 |
| 13966 | ASYB | ASUPPLY CHAIN SOLUTION LLC | | | SCAC4 |
| 13967 | ASYC | ANIMAL SUPPLY COMPANY | | | SCAC3 |
| 13968 | ASYD | AGRICOLA SOLYMAR SA DE CV | | | SCAC4 |
| 13969 | ASYE | ATLANTIC SYSTEMS INC | | | SCAC3 |
| 13970 | ASYF | ATEC SYSTEMS LTD | | | SCAC4 |
| 13971 | ASYG | ASTEC LOGISTICS | | | SCAC4 |
| 13972 | ASYH | ALLIED SYSTEMS INC | | | SCAC3 |
| 13973 | ASYI | ALTO SYSTEMS INC | | | SCAC3 |
| 13974 | ASYJ | AIR SUPPLY ALASKA INC | | | SCAC4 |
| 13975 | ASYK | ASHLEY LYN TRUCKING | | | SCAC4 |
| 13976 | ASYL | ARPIN AMERICA MOVING SYSTEMS LLC | | | SCAC4 |
| 13977 | ASYM | ACTION SYSTEMS INC | | | SCAC3 |
| 13978 | ASYM | AIREX SYSTEMS LTD | | | SCAC4 |
| 13979 | ASYN | ALICE SPECIALTY CO INC | | | SCAC3 |
| 13980 | ASYN | ATS RETAIL SOLUTIONS | | | SCAC4 |
| 13981 | ASYP | ALLIED SYSTEMS (CANADA) COMPANY | | | SCAC4 |
| 13982 | ASYQ | ALLSPRAY LTD | | | SCAC4 |
| 13983 | ASYS | ASCO SYSTEMS INC | | | SCAC3 |
| 13984 | ASYT | ASAY TRUCKING INC | | | SCAC3 |
| 13985 | ASYT | ASAY TRUCKING INC | | | SCAC4 |
| 13986 | ASYW | AERIO SHIPMANAGEMENT LTD | | | SCAC4 |
| 13987 | ASYX | Avondale Shipyards, Inc. | added 1/1975; 1/1975-1/1980; eliminated 1/1985 | | NAKINA |
| 13988 | ASYX | Avondale Shipyards, Inc. | added 1/75; 1/75-1/80; eliminated 1/85 | | NRHS |
| 13989 | ASYX | AVONDALE SHIPYARDS INC. | | | PWRC |
| 13990 | ASYX | Avondale Shipyards | | | RSRV |
| 13991 | ASZ | Astrakhan Airlines | IATA: OB, Callsign: Air Astrakhan, IATA Prefix: 562, Designator OB recalled by IATA | RUS | AVCODES |
| 13992 | ASZ | Air Sardinia S.p.A. | IATA: UF, | I | AVCODES |
| 13993 | ASZ | Air Sardinia S.p.A. | IATA: VV, | I | AVCODES |
| 13994 | ASZ | Ascension Air Management, Inc. | Callsign: Ascension, | USA | AVCODES |
| 13995 | ASZ | Astrakhan Airlines | IATA: OB | | ICAO1 |
| 13996 | ASZC | ALPHA SUEZMAX CORPORATION | | | SCAC4 |
| 13997 | ASZD | ART STIMULI LTD | | | SCAC4 |
| 13998 | ASZF | ALVAREZ SANCHEZ, FELIPE | | | SCAC4 |
| 13999 | ASZG | ADELMAN SAND & GRAVEL INC | | | SCAC4 |
| 14000 | ASZI | ALL STATE LOG INC | | | SCAC4 |
