| 1 | APN | Aerovia Del Altiplano, S.A. de C.V. | Callsign: Aeroantiplano, | MEX | AVCODES |
| 2 | APN | Air Polonia Ltd. | Callsign: Air Polonia, Founded in 2001, Commenced operations on 08 December 2003. Ceased operations on 05 December 2004. | PL | AVCODES |
| 3 | APN | Alpine Airlines | Callsign: Air Alpes, | F | AVCODES |
| 4 | APN | Apalachicola Northern R.R. Co. | | USA | TRAFFIC |
| 5 | APNA | APNIA MARITIME CORPORATION | | | SCAC3 |
| 6 | APNA | Algerian People's National Army | | DZ | TRAFFIC |
| 7 | APNC | Appanoose County Community R.R., Inc. | added 1/1985; 1/1985-7/2000; eliminated 7/2002; 7/2005 | | NAKINA |
| 8 | APNC | Appanoose County Community R.R., Inc. | added 1/85; 1/94-7/2000 | | NRHS |
| 9 | APNC | APPANOOSE COUNTY COMMUNITY RAILROAD, INC. | | | PWRC |
| 10 | APNC | Appanoose County Community Railroad | | | RSRV |
| 11 | APNC | APPANOOSE COUNTY COMMUNITY RAILROAD | | | SCAC3 |
| 12 | APND | APPLIANCE DISTRIBUTOR RESOURCE INC | | | SCAC3 |
| 13 | APND | ASPEN TRADING INC | | | SCAC4 |
| 14 | APNE | ARPIN ENTERPRISES INC | | | SCAC3 |
| 15 | APNE | ARPIN ENTERPRISES INC | | | SCAC4 |
| 16 | APNF | ALL POINTS FREIGHT INC | | | SCAC4 |
| 17 | APNG | ALASKA POINTS NORTH TRANSPORT | | | SCAC4 |
| 18 | APNH | ASPEN HOMES | | | SCAC3 |
| 19 | APNI | AMC PARTNERSHIP | | | SCAC4 |
| 20 | APNJ | AMSPEC DISTRIBUTION (A DIV OF AMSPE | | | SCAC3 |
| 21 | APNL | ALPACE INTERNATIONAL INC | | | SCAC3 |
| 22 | APNM | AMERICAN PAN COMPANY | | | SCAC4 |
| 23 | APNN | AUTO-PRO TRANSPORT INC | | | SCAC3 |
| 24 | APNN | ARTESANIA E PINON | | | SCAC4 |
| 25 | APNO | ALL POINTS TRUCKING INC OF NE OHIO | | | SCAC3 |
| 26 | APNO | ALL POINTS TRUCKING INC OF NE OHIO | | | SCAC4 |
| 27 | APNP | ASPEN TRANSPORT SYSTEMS INC | | | SCAC3 |
| 28 | APNQ | ALL POINTS TRANSPORTATION INC | | | SCAC3 |
| 29 | APNQ | APN MAQUINADOS Y SERVICIOS SA DE CV | | | SCAC4 |
| 30 | APNR | APPALACHIAN COACH TOURS | | | SCAC3 |
| 31 | APNS | ALL POINTES LOGISTICS, INC | | | SCAC3 |
| 32 | APNS | APPLE ANNIES | | | SCAC4 |
| 33 | APNT | ALPINE TRUCKING COMPANY | | | SCAC3 |
| 34 | APNT | A & P TRANSPORTATION CO INC | | | SCAC4 |
| 35 | APNU | AQUA PHARMA AS | | N | BIC |