| 1 | POT | Air Company Polet | IATA: YQ, Callsign: Polet, IATA Prefix: 342, Suspended operations on 24 November 2014. AOC withdrawn April 2015. Established and commenced operations in 1988. | RUS | AVCODES |
| 2 | POT | Polet | | | ICAO1 |
| 3 | POT | ViP Verkehrsbetrieb Potsdam GmbH | Real: VIP, City: Potsdam | D | TRAFFIC |
| 4 | POTB | Port of Tillamook Bay R.R. | added 7/1979; 1/1980-7/2000; eliminated 1/2005; 7/2005 | | NAKINA |
| 5 | POTB | Port of Tillamook Bay R.R. | added 7/79; 1/80-7/2000 | | NRHS |
| 6 | POTB | PORT OF TILLAMOOK BAY RAILROAD | | | PWRC |
| 7 | POTB | PORT OF TILLAMOOK BAY RAILROAD | | | PWRC |
| 8 | POTB | Port of Tillamook Bay Railroad | | | RSRV |
| 9 | POTB | PORT OF TILLAMOOK BAY RAILROAD | | | SCAC3 |
| 10 | POTB | Port of Tillamook Bay R.R. | | USA | TRAFFIC |
| 11 | POTC | PORTER TRANSCONTINENTAL TRUCKING | | | SCAC3 |
| 12 | POTD | POWELL TRANSPORTATION | | | SCAC3 |
| 13 | POTD | POTOSINA DEL AIRE | | | SCAC4 |
| 14 | POTF | POTTERFIELD, REN TRUCKING INC | | | SCAC3 |
| 15 | POTF | POTTERFIELD, REN TRUCKING INC | | | SCAC4 |
| 16 | POTI | POTASHNICK, S & J TRANSPORTATION IN | | | SCAC3 |
| 17 | POTI | POTASHNICK, S & J TRANSPORTATION IN | | | SCAC4 |
| 18 | POTJ | POLLARD TRANSPORTATION INC | | | SCAC3 |
| 19 | POTK | POOLE TRUCK LINE INC | | | SCAC3 |
| 20 | POTK | PIONEER OILFIELD TRUCKING INC | | | SCAC4 |
| 21 | POTM | POWER TRANSPORTATION CORP | | | SCAC3 |
| 22 | POTM | PONTOS E N E | | | SCAC4 |
| 23 | POTM | Potteries Motor Traction | City: Stoke-on-Trent | GB | TRAFFIC |
| 24 | POTN | POTTER, FRANK TRUCKING CO | | | SCAC3 |
| 25 | POTO | POTTS TRUCKING CO | | | SCAC3 |
| 26 | POTO | POTOSINOS MENSAJERIA Y PAQUETERIA S | | | SCAC4 |
| 27 | POTP | POPE TRANSPORT INC | | | SCAC4 |
| 28 | POTQ | POST TRANSFER | | | SCAC3 |
| 29 | POTQ | PRONTO TRUCKING LLC | | | SCAC4 |
| 30 | POTR | POTIGIAN TRANSFER | | | SCAC3 |
| 31 | POTR | POOLE TRUCKING | | | SCAC4 |
| 32 | POTT | POTTER'S EXPRESS, INC | | | SCAC3 |
| 33 | POTT | POTTERY AND OTHER | | | SCAC4 |
| 34 | POTU | POLYTRA S.A. | | | SCAC3 |
| 35 | POTX | General American Marks Co. | added 1/1998; 7/2000-7/2005 | | NAKINA |
| 36 | POTX | General American Transportation Corp. | added 4/1990; 1/1994; eliminated 1/1998 | | NAKINA |
| 37 | POTX | Suburban Propane—Division of Quantum Chemical Corp. | added 7/1988; eliminated 4/1990 | | NAKINA |
| 38 | POTX | Suburban Propane Gas Corp. | added 1/1986; eliminated 7/1988 | | NAKINA |
| 39 | POTX | Pargas, Inc. | added 1/1968; 4/1970-1/1980; eliminated 1/1986 | | NAKINA |
| 40 | POTX | Pargas Tank Cars, Inc. | added 10/1965; 10/1966; eliminated 1/1968 | | NAKINA |
| 41 | POTX | Pargas Tank Cars, Inc. | added 10/65; 10/66; eliminated 1/68 | | NRHS |
| 42 | POTX | Pargas, Inc. | added 1/68; 4/70-1/80; eliminated 1/86 | | NRHS |
| 43 | POTX | Suburban Propane Gas Corp. | added 1/86; eliminated 7/88 | | NRHS |
| 44 | POTX | Suburban Propane--Division of Quantum Chemical Corp. | added 7/88; eliminated 4/90 | | NRHS |
| 45 | POTX | General American Transportation Corp. | added 4/90; 1/94; eliminated 1/98 | | NRHS |
| 46 | POTX | General American Marks Co. | added 1/98; 7/2000 | | NRHS |
| 47 | POTX | *SUBURBAN PROPANE GAS CO., DIV. QUANTUM CHEMICAL CORP. [PARGAS, INC.] | | | PWRC |
| 48 | POTX | +GENERAL AMERICAN MARKS CO. [GENERAL AMERICAN TRANSPORTATION CORP.] | | | PWRC |
| 49 | POTX | General American Marks (GATX Corporation) | | | RSRV |
| 50 | POTX | PARGAS TANK CARS INC (SUBURBAN PROP | | | SCAC3 |
| 51 | POTX | PCS SALES USA INC | | | SCAC4 |
| 52 | POTZ | POPE & TALBOT | | | PWRC |
