| 1 | PSP | Air St. Pierre, S.A. | Callsign: Saint-Pierre, | CDN | AVCODES |
| 2 | PSP | Publiservicios Aereos, S.A. de C.V. | Callsign: Publiservicios, | MEX | AVCODES |
| 3 | PSP | Publiservicios Aereos | | | ICAO1 |
| 4 | PSP | Polskie Siły Powietrzne | The Polish Air Forces (Polskie Siły Powietrzne) was the name of the Polish Air Forces formed in France and the United Kingdom during World War II. | PL | TRAFFIC |
| 5 | PSP | PETROLSPED Slovakia s.r.o. | | SK | VKM |
| 6 | PSPC | PARAMOUNT SPECIALIZED CARRIERS | | | SCAC3 |
| 7 | PSPCG | PSP Cargo Group SA | | RO | TRAFFIC |
| 8 | PSPE | PRODUCE SUPPLY EXPRESS INC | | | SCAC3 |
| 9 | PSPE | PRODUCE SUPPLY EXPRESS INC | | | SCAC4 |
| 10 | PSPF | PREMIER SECURITY PRODUCTS INC | | | SCAC4 |
| 11 | PSPG | POTI SHIPPING CO., LTD. | | | SCAC3 |
| 12 | PSPG | P & S PAVING INC | | | SCAC4 |
| 13 | PSPH | PULLIAM SPECIALIZED HAULING INC | | | SCAC3 |
| 14 | PSPH | PASTRY PLACE, THE | | | SCAC4 |
| 15 | PSPI | PROMOTERS SUPPLY INC | | | SCAC3 |
| 16 | PSPI | PACIFIC STATES PETROLEUM INC | | | SCAC4 |
| 17 | PSPJ | PREMIUM SHIPPING COMPANY LIMITED | | | SCAC4 |
| 18 | PSPL | PATTY SHIPPING PTE LTD | | | SCAC3 |
| 19 | PSPM | PROSPERITY MARITIME CO LTD | | | SCAC3 |
| 20 | PSPM | PROSPEROU | | | SCAC4 |
| 21 | PSPN | PROMISES PLUS INC | | | SCAC4 |
| 22 | PSPOZ | Państwowa Straż Pożarna | | PL | TRAFFIC |
| 23 | PSPP | PPP SERVICES LLC | | | SCAC4 |
| 24 | PSPR | PROPERTIES PROFESSIONAL SERVICE | | | SCAC4 |
| 25 | PSPRO | PSP Cargo Group SA | | RO | TRAFFIC |
| 26 | PSPT | PASO PETROLEUM | | | SCAC4 |
| 27 | PSPV | PUGET SOUND PETROLEUM | | | SCAC4 |
| 28 | PSPW | PREFERRED TRANSPORTATION LLC | | | SCAC4 |
| 29 | PSPX | Chevron Phillips Chemical Co., LP | added 10/2002; 7/2005 | | NAKINA |
| 30 | PSPX | Phillips Petroleum Co. | added 10/1995; 7/2000; eliminated 10/2002 | | NAKINA |
| 31 | PSPX | Phillips 66 Co., a Subsidiary of Phillips Petroleum Co. | added 7/1986; 1/1994; eliminated 10/1995 | | NAKINA |
| 32 | PSPX | Phillips Petroleum Co. | 7/1937-1/1980; eliminated 7/1986 | | NAKINA |
| 33 | PSPX | Bartex Pipe Line Co. (Phillips Petroleum Co.) | 7/1935 | | NAKINA |
| 34 | PSPX | Phillips Petroleum Co. | 8/1920-7/1932 | | NAKINA |
| 35 | PSPX | Phillips Petroleum Co. | 4/38-1/80; eliminated 7/86 | | NRHS |
| 36 | PSPX | Phillips 66 Co., a Subsidiary of Phillips Petroleum Co. | added 7/86; 1/94; eliminated 10/95 | | NRHS |
| 37 | PSPX | Phillips Petroleum Co. | added 10/95; 7/2000 | | NRHS |
| 38 | PSPX | CHEVRON PHILLIPS CHEMICAL CO., LP [PHILLIPS PETROLEUM CO.] | | | PWRC |
| 39 | PSPX | Phillips Petroleum | | | RSRV |
| 40 | PSPX | PHILLIPS PETROLEUM CO | | | SCAC3 |
| 41 | PSPX | CHEVRON PHILLIPS CHEMICAL COMPANY L | | | SCAC4 |
