| 1 | POA | Portuguese Army | Callsign: Portuguese Army, | P | AVCODES |
| 2 | POA | Portuguese Army | | | ICAO1 |
| 3 | POAA | POLAR TRANSPORT | | | SCAC4 |
| 4 | POAB | PROFILES AB | | | SCAC3 |
| 5 | POAC | POOLE AIR COURIERS | | | SCAC3 |
| 6 | POAC | POIRIER, SERGE | | | SCAC4 |
| 7 | POAD | POOLE, A D TRANSPORTATION CO INC | | | SCAC3 |
| 8 | POAE | POL-TRAILER CORP | | | SCAC4 |
| 9 | POAF | PORTLAND AIR FREIGHT INC | | | SCAC3 |
| 10 | POAF | PORTLAND AIR FREIGHT INC | | | SCAC4 |
| 11 | POAG | PRO AG TRANSPORT INC | | | SCAC3 |
| 12 | POAJ | PROA INTERNACIONAL Y LOGISTICA SA D | | | SCAC4 |
| 13 | POAK | Port of Oakland Ry. | 1/1980-7/2005 | | NAKINA |
| 14 | POAK | Port of Oakland Ry. | 1/80-7/2000 | | NRHS |
| 15 | POAK | PORT OF OAKLAND RAILWAY | | | PWRC |
| 16 | POAK | Port of Oakland Railway | | | RSRV |
| 17 | POAK | PORT OF OAKLAND RAILWAY | | | SCAC3 |
| 18 | POAK | POLLARD TRUCKING INC | | | SCAC4 |
| 19 | POAN | POLREY FURNITURE INC | | | SCAC4 |
| 20 | POAP | PORTLAND AIRPORT LIMOUSINE COMPANY | | | SCAC3 |
| 21 | POAQ | PONTIAC CARTAGE CO INC | | | SCAC3 |
| 22 | POAQ | POTTER CHRISTMAS TREE FARM | | | SCAC4 |
| 23 | POAR | PRO-AIRE TRANSPORT INC | | | SCAC3 |
| 24 | POAR | PABCO INC | | | SCAC4 |
| 25 | POAS | POST & SONS TRANSFER CO | | | SCAC3 |
| 26 | POAS | POLYTECH NETTING INDUSTRIES DE MEXI | | | SCAC4 |
| 27 | POAT | PORTERS AUTO TRANSPORT, INC | | | SCAC3 |
| 28 | POAU | PRIMY OCEAN AIR LOGISTICS CO LTD | | PRC | BIC |
