| 1 | APR | Société Nouvelle D'exploitation Air Provence | Callsign: Air Provence, | F | AVCODES |
| 2 | APR | Air Provence International | IATA: DG, Callsign: Air Provence, IATA designator changed to P3 | F | AVCODES |
| 3 | APR | Compagnie Air Provence | Name changed to Societe Nouvelle Exploitation d'Air Provence | F | AVCODES |
| 4 | APR | Air Polonia Cargo Ltd. | Callsign: AP Cargo, IATA Prefix: 413, Prefix Code 413 recalled by IATA | PL | AVCODES |
| 5 | APR | Air Polonia Cargo Ltd. | Callsign: AP Cargo, | PL | AVCODES |
| 6 | APR | Societe Nouvelle Exploitation d'Air Provence | Name changed to Compagnie Air Provence | F | AVCODES |
| 7 | APR | ALBERTA PRAIRIE RAILWAY | | | SCAC4 |
| 8 | APRC | ALBANY PORT RAILROAD CORPORATION | | | SCAC3 |
| 9 | APRF | APR FORWARDERS INC | | | SCAC3 |
| 10 | APRG | AMERICAN PAPER RECYCLING | | | SCAC3 |
| 11 | APRG | AUTO PARTES VARGAS | | | SCAC4 |
| 12 | APRI | APRIL TRUCKING CORP | | | SCAC3 |
| 13 | APRJ | APR LLC | | | SCAC4 |
| 14 | APRK | ASBURY PARK TRANSIT LINES INC | | | SCAC3 |
| 15 | APRM | A PRO MOVING & TRUCKING CORP | | | SCAC3 |
| 16 | APRM | AIRLINE PETROLEUM | | | SCAC4 |
| 17 | APRN | AIRPORT CRUISER INC | | | SCAC3 |
| 18 | APRN | AIRSEP CORPORATION | | | SCAC4 |
| 19 | APRO | APRIL TRANSPORT INC | | | SCAC3 |
| 20 | APRO | ALL-PRO CARRIERS LLC | | | SCAC4 |
| 21 | APRP | ALL-PRO TRANSPORT INC | | | SCAC4 |
| 22 | APRQ | ANTIPAROS MARITIME CORPORATION | | | SCAC3 |
| 23 | APRR | *ALBANY PORT RAILROAD | | | PWRC |
| 24 | APRR | *ALLEGHENY PORTAGE RAILROAD | | | PWRC |
| 25 | APRR | AIRPORT TRANSFER & STORAGE CO | | | SCAC3 |
| 26 | APRR | AIRPORT TRANSFER & STORAGE CO | | | SCAC4 |
| 27 | APRS | AMERICAN PRESIDENT TRUCKING COMPANY | | | SCAC3 |
| 28 | APRS | AMERICAN PRESIDENT TRUCKING COMPANY | | | SCAC4 |
| 29 | APRT | APPROVED TRANSPORTATION | | | SCAC3 |
| 30 | APRU | CMA-CGM | | F | BIC |
| 31 | APRU | PROFESSIONNELS REUNIS | | | SCAC3 |
| 32 | APRU | APL CO PTE LTD-NOL GROUP | | | SCAC4 |
| 33 | APRV | A PRECISION MOVERS | | | SCAC3 |
| 34 | APRV | APLOTRAN XPRESS S A DE C V | | | SCAC4 |
| 35 | APRX | Air Products and Chemicals, Inc. | added 1/1975; 1/1975-7/2005 | | NAKINA |
| 36 | APRX | Ardmore Producing & Refining Co. | 8/1920 | | NAKINA |
| 37 | APRX | Air Products and Chemicals, Inc. | added 1/75; 1/75-7/2000 | | NRHS |
| 38 | APRX | *ARDMORE PRODUCING & REFINING CO. | | | PWRC |
| 39 | APRX | *ALANSON & PETOSKY RAILROAD | | | PWRC |
| 40 | APRX | +AIR PRODUCTS AND CHEMICAL INC | | | PWRC |
| 41 | APRX | Air Products and Chemicals | | | RSRV |
| 42 | APRX | AIR PRODUCTS AND CHEMICAL INC | | | SCAC4 |
