| 1 | AOC | TitanFly International S.r.l. | Callsign: Aramis, Name changed to Air Eclipse International S.r.l. | RSM | AVCODES |
| 2 | AOC | Air Eclipse International S.r.l. | Callsign: Aramis, Name changed from TitanFly International S.r.l. | RSM | AVCODES |
| 3 | AOC | AVCOM | IATA: J6 | | ICAO1 |
| 4 | AOCA | ARCO COAL SALES COMPANY | | | SCAC3 |
| 5 | AOCA | AINSLEY OIL COMPANY INC | | | SCAC4 |
| 6 | AOCB | A-ONE (A-1) CHARTERS INC | | | SCAC3 |
| 7 | AOCB | ALVES OIL CO INC | | | SCAC4 |
| 8 | AOCC | A-ONE (A-1) CITY CAB SHUTTLE CORPOR | | | SCAC3 |
| 9 | AOCD | AMADOR COMPANIA ARMADORA S A | | | SCAC3 |
| 10 | AOCD | AOC MEXICO SA DE CV | | | SCAC4 |
| 11 | AOCE | A-ONE (A-1) CHICAGO COURIER INC | | | SCAC3 |
| 12 | AOCF | AMERICAN OCEAN FREIGHT SERVICES INC | | | SCAC3 |
| 13 | AOCG | ASTRO CARTAGE INC | | | SCAC3 |
| 14 | AOCG | ASTRO CARTAGE INC | | | SCAC4 |
| 15 | AOCH | A ONE CARRIERS INC | | | SCAC4 |
| 16 | AOCI | A-ONE (A-1) COURIER | | | SCAC3 |
| 17 | AOCI | AARON OIL COMPANY INC | | | SCAC4 |
| 18 | AOCK | AIR OCEAN CARGO USA LLC | | | SCAC4 |
| 19 | AOCL | AMERICAN OCEAN LINES | | | SCAC3 |
| 20 | AOCL | ALTO CONTAINER LINE INC | | | SCAC4 |
| 21 | AOCM | A-ONE (A-1) CARRIER MOVING & STORAG | | | SCAC3 |
| 22 | AOCN | AIRPORT CONNECTION INC, THE, | | | SCAC3 |
| 23 | AOCN | A ONE (A1) CARGO CORPORATION | | | SCAC4 |
| 24 | AOCO | AERO CHARTERS & TOURS | | | SCAC3 |
| 25 | AOCP | ASTRA COMPANIA ARGENTINA DE PETROLE | | | SCAC3 |
| 26 | AOCP | AAA OIL CO-PRIESTLEY HEATING OIL | | | SCAC4 |
| 27 | AOCQ | ASHFORD, T P OIL COMPANY | | | SCAC3 |
| 28 | AOCR | ARMOR CARRIERS INC | | | SCAC3 |
| 29 | AOCR | ALE ELECTRO-CONSTRUCCIONES SA DE CV | | | SCAC4 |
| 30 | AOCS | AIRLIMO-AIRLINE COURIER SERVICE | | | SCAC3 |
| 31 | AOCS | AO CONTAINER LINES INC | | | SCAC4 |
| 32 | AOCT | ALBERTO, C TRUCKING CO INC | | | SCAC3 |
| 33 | AOCU | INNOSPEC LIMITED | | GB | BIC |
| 34 | AOCU | THE ASSOCIATED OCTEL CO. LTD | | | PWRC |
| 35 | AOCU | Associated Octel | | | RSRV |
| 36 | AOCU | ASSOCIATED OCTEL | | | SCAC3 |
| 37 | AOCU | ASSOCIATED OCTEL CO LTD | | | SCAC4 |
| 38 | AOCV | ADVANCE OCEAN INC. | | | SCAC4 |
| 39 | AOCW | ASTRA OIL COMPANY LLC | | | SCAC4 |
| 40 | AOCX | Aluminum Co. of America | added 4/1953; 7/1954-7/2005 | | NAKINA |
| 41 | AOCX | Aluminum Ore Co. (Alcoa Ore Co.) | 7/1930-7/1932 | | NAKINA |
| 42 | AOCX | Aluminum Ore Co. | 7/1935-1/1952; eliminated 4/1953 | | NAKINA |
| 43 | AOCX | Aluminum Ore Co. | 4/38-1/52 | | NRHS |
| 44 | AOCX | Aluminum Co. of America | 10/57-7/2000 | | NRHS |
| 45 | AOCX | ALUMINUM COMPANY OF AMERICA {ALUMINUM ORE CO.; ALCOA ORE CO.] | | | PWRC |
| 46 | AOCX | Aluminum of America (Alcoa) | | | RSRV |
| 47 | AOCX | ALUMINUM COMPANY OF AMERICA | | | SCAC3 |
| 48 | AOCY | ADVANTAGE OIL CO | | | SCAC4 |
| 49 | AOCZ | AMERICAN OIL CO. (BP AMOCO) | | | PWRC |
