| 11301 | APMZ | MAERSK EQUIPMENT SERVICE COMPANY | | | SCAC4 |
| 11302 | APN | Aerovia Del Altiplano, S.A. de C.V. | Callsign: Aeroantiplano, | MEX | AVCODES |
| 11303 | APN | Air Polonia Ltd. | Callsign: Air Polonia, Founded in 2001, Commenced operations on 08 December 2003. Ceased operations on 05 December 2004. | PL | AVCODES |
| 11304 | APN | Alpine Airlines | Callsign: Air Alpes, | F | AVCODES |
| 11305 | APNA | APNIA MARITIME CORPORATION | | | SCAC3 |
| 11306 | APNC | Appanoose County Community R.R., Inc. | added 1/1985; 1/1985-7/2000; eliminated 7/2002; 7/2005 | | NAKINA |
| 11307 | APNC | Appanoose County Community R.R., Inc. | added 1/85; 1/94-7/2000 | | NRHS |
| 11308 | APNC | APPANOOSE COUNTY COMMUNITY RAILROAD, INC. | | | PWRC |
| 11309 | APNC | Appanoose County Community Railroad | | | RSRV |
| 11310 | APNC | APPANOOSE COUNTY COMMUNITY RAILROAD | | | SCAC3 |
| 11311 | APND | APPLIANCE DISTRIBUTOR RESOURCE INC | | | SCAC3 |
| 11312 | APND | ASPEN TRADING INC | | | SCAC4 |
| 11313 | APNE | ARPIN ENTERPRISES INC | | | SCAC3 |
| 11314 | APNE | ARPIN ENTERPRISES INC | | | SCAC4 |
| 11315 | APNF | ALL POINTS FREIGHT INC | | | SCAC4 |
| 11316 | APNG | ALASKA POINTS NORTH TRANSPORT | | | SCAC4 |
| 11317 | APNH | ASPEN HOMES | | | SCAC3 |
| 11318 | APNI | AMC PARTNERSHIP | | | SCAC4 |
| 11319 | APNJ | AMSPEC DISTRIBUTION (A DIV OF AMSPE | | | SCAC3 |
| 11320 | APNL | ALPACE INTERNATIONAL INC | | | SCAC3 |
| 11321 | APNM | AMERICAN PAN COMPANY | | | SCAC4 |
| 11322 | APNN | AUTO-PRO TRANSPORT INC | | | SCAC3 |
| 11323 | APNN | ARTESANIA E PINON | | | SCAC4 |
| 11324 | APNO | ALL POINTS TRUCKING INC OF NE OHIO | | | SCAC3 |
| 11325 | APNO | ALL POINTS TRUCKING INC OF NE OHIO | | | SCAC4 |
| 11326 | APNP | ASPEN TRANSPORT SYSTEMS INC | | | SCAC3 |
| 11327 | APNQ | ALL POINTS TRANSPORTATION INC | | | SCAC3 |
| 11328 | APNQ | APN MAQUINADOS Y SERVICIOS SA DE CV | | | SCAC4 |
| 11329 | APNR | APPALACHIAN COACH TOURS | | | SCAC3 |
| 11330 | APNS | ALL POINTES LOGISTICS, INC | | | SCAC3 |
| 11331 | APNS | APPLE ANNIES | | | SCAC4 |
| 11332 | APNT | ALPINE TRUCKING COMPANY | | | SCAC3 |
| 11333 | APNT | A & P TRANSPORTATION CO INC | | | SCAC4 |
| 11334 | APNU | AQUA PHARMA AS | | N | BIC |
| 11335 | APO | Aeropro | Callsign: Aeropro, | CDN | AVCODES |
| 11336 | APO | Air Posh d.o.o. | Callsign: Air Posh, | SR | AVCODES |
| 11337 | APO | Aeropro | | | ICAO1 |
| 11338 | APOA | ALL POINTS TRANSPORT | | | SCAC4 |
| 11339 | APOB | APOLLO TRANSPORTATION SPECIALIST IN | | | SCAC4 |
| 11340 | APOF | APOLLO FORWARDERS INC | | | SCAC3 |
| 11341 | APOG | APPOLOSSA TRUCKING INC | | | SCAC3 |
| 11342 | APOH | APOLLO ATHLETICS | | | SCAC4 |
| 11343 | APOM | APOLLO MOVING & STORAGE INC | | | SCAC3 |
| 11344 | APOM | ASHPOINT CATTLE CO | | | SCAC4 |
| 11345 | APON | ALL POINTS EXPRESS INC | | | SCAC3 |
| 11346 | APOO | APOLLO TRANSPORTS INC | | | SCAC3 |
| 11347 | APOO | APOLLO SKY | | | SCAC4 |
| 11348 | APOP | ARPIN, PAUL OF PENSACOLA | | | SCAC3 |
| 11349 | APOQ | APOLLO CARTAGE INC | | | SCAC3 |
| 11350 | APOQ | ALPICO INTERNATIONAL INC | | | SCAC4 |
| 11351 | APOR | AMERICAN TRANSPORT LEASING INC | | | SCAC3 |
| 11352 | APOR | APOLO REFRIGERADOS SA DE CV | | | SCAC4 |
| 11353 | APOS | AIRPORT LIMOUSINE SERVICE INC | | | SCAC3 |
| 11354 | APOV | APOLLO VAN LINES INC | | | SCAC3 |
| 11355 | APOV | APOLLO VAN LINES INC | | | SCAC4 |
| 11356 | APOX | Alabama Power Co. | added 4/1998; eliminated 7/1999; 7/2000-7/2005 | | NAKINA |
| 11357 | APOX | Apco Oil Corp. | added 7/1961; 7/1965-4/1970; eliminated 1/1974 | | NAKINA |
| 11358 | APOX | Anderson-Pritchard Oil Corp. | added 10/1953; 7/1954-4/1961; eliminated 7/1961 | | NAKINA |
| 11359 | APOX | Kanotex Refining Co. | eliminated 10/1953 | | NAKINA |
| 11360 | APOX | Bradford Oil Refining Co. | 7/1923-7/1936; 7/1937 (not listed) | | NAKINA |
| 11361 | APOX | Kanotex Refining Co. | eliminated 10/53 | | NRHS |
| 11362 | APOX | Anderson-Pritchard Oil Corp. | added 10/53; 10/57-4/61 | | NRHS |
| 11363 | APOX | Apco Oil Corp. | 7/65-4/70; eliminated 1/74 | | NRHS |
| 11364 | APOX | Alabama Power Co. | added 4/98; eliminated 7/99; 7/2000 | | NRHS |
| 11365 | APOX | *BRADFORD OIL REFINING CO. | | | PWRC |
| 11366 | APOX | *APCO OIL CORP. {KANOTEX REFINING CO.; ANDERSON-PRITCHARD OIL CORP.] (ELIMINATED 1/1974) | | | PWRC |
| 11367 | APOX | +ALABAMA POWER COMPANY | | | PWRC |
| 11368 | APOX | Alabama Power | | | RSRV |
| 11369 | APOX | APCO OIL CORP | | | SCAC3 |
| 11370 | APOX | ALABAMA POWER COMPANY | | | SCAC4 |
| 11371 | APOY | APACHE OIL COMPANY | | | SCAC4 |
| 11372 | APOZ | ALABAMA POWER COMPANY | | | PWRC |
| 11373 | APP | Aerolíneas Islas de Las Perlas | IATA: WL, Callsign: Aeroperlas, IATA Prefix: 054, Ceased operations on 29 February 2012. TACA Regional Airline | PA | AVCODES |
| 11374 | APP | Alpavia d.o.o. | Callsign: Alpavia, | SK | AVCODES |
| 11375 | APP | Aerolineas Pacifico Atlantico, S.A. (Apair) | | | ICAO1 |
| 11376 | APPA | APPERSON, ANDY & SONS | | | SCAC3 |
| 11377 | APPB | APS TRANSPORTATION | | | SCAC4 |
| 11378 | APPC | APPLIANCE STORE INC, THE | | | SCAC3 |
| 11379 | APPC | APPALACHIAN TRANSPORT INC | | | SCAC4 |
| 11380 | APPD | APPLIED TECHNOLOGY TRANSPORTATION | | | SCAC3 |
| 11381 | APPE | APPLE EXPRESS | | | SCAC3 |
| 11382 | APPF | APPA FINE FOODS INC | | | SCAC4 |
| 11383 | APPG | APPLEGATE TRUCKING | | | SCAC3 |
| 11384 | APPH | APPALACHIAN ENTERPRISES INC | | | SCAC4 |
| 11385 | APPI | APPLIANCE CONNECTION CORP, THE | | | SCAC3 |
| 11386 | APPI | APPELQUIST TRUCKING INC | | | SCAC4 |
| 11387 | APPJ | ACE PAPER PRODUCTS COMPANY | | | SCAC3 |
| 11388 | APPK | APPLE TRUCKING | | | SCAC3 |
| 11389 | APPK | ANDERSON PAPER & PACKAGING CO INC | | | SCAC4 |
| 11390 | APPL | APPLE LINES, INC | | | SCAC3 |
| 11391 | APPL | APPEL OIL COMPANY | | | SCAC4 |
| 11392 | APPM | APPEL TRUCKING | | | SCAC3 |
| 11393 | APPN | AMERICAS TRANSPORT INC | | | SCAC3 |
| 11394 | APPN | APPETITO PROVISION COMPANY INC | | | SCAC4 |
| 11395 | APPP | AP TRANSPORT | | | SCAC4 |
| 11396 | APPQ | APPLING WAREHOUSE CO | | | SCAC3 |
| 11397 | APPQ | AKIN & PORTER PRODUCE INC | | | SCAC4 |
| 11398 | APPR | AVAILABLE SHIPPERS INC | | | SCAC3 |
| 11399 | APPR | AVAILABLE SHIPPERS INC | | | SCAC4 |
| 11400 | APPS | APPS ENTERPRISES | | | SCAC3 |
