| Paracom SA (Paracom SA) |
 Argentina |
Commercial |
1992 |
0 |
0 |
0 |
| Paradigm Secure Comms, Astrium Services (Paradigm) |
 United Kingdom |
Commercial |
1999 |
0 |
0 |
0 |
| Paradigm Secure Communications (PSCOM) |
United Kingdom |
Commercial |
|
0 |
0 |
0 |
| Paraguayan Space Agency (AEP) |
 Paraguay |
Government / agency |
2018 |
0 |
0 |
0 |
| Parsons Corp./Torrance (Parsons Corp) |
 United States |
Commercial |
2019 |
0 |
0 |
0 |
| Patriot Infovention (Patriot Info) |
 Thailand |
Commercial |
2020 |
0 |
0 |
0 |
| Patterson-Moos Research (Patterson-Moos) |
United States |
Commercial |
1948 |
0 |
0 |
0 |
| Paul Sabatier University, Toulouse (Toul.) |
 France |
Academic / research |
1961 |
0 |
0 |
0 |
| Pavlograd Khimmash (Pavlograd) |
 Russia |
Commercial |
|
0 |
0 |
0 |
| Payload Aerospace S.L. (PLD Space) |
 Spain |
Commercial |
2011 |
0 |
0 |
2 |
| Payload Systems, Inc. (Payload Systems) |
United States |
Commercial |
1984 |
0 |
0 |
0 |
| Pendrell Corp. (Pendrell) |
United States |
Commercial |
2011 |
0 |
0 |
0 |
| Pengcheng Laboratory (Pencheng) |
 China |
Academic / research |
2018 |
0 |
0 |
0 |
| People's Commissariat of Defense of the USSR (NKO) |
|
Government / agency |
1934 |
0 |
0 |
0 |
| People's Liberation Army (PLA) |
China |
Government / agency |
|
0 |
0 |
0 |
| Perigee Aerospace Inc (Perigee Aerospace) |
 South Korea |
Commercial |
2016 |
0 |
0 |
0 |
| Perkin-Elmer Corp. (Perkin-Elmer) |
United States |
Commercial |
1968 |
0 |
0 |
0 |
| Perkins High School (Perkins HS) |
United States |
Academic / research |
|
0 |
0 |
0 |
| Peruvian Aviation University (U. Alas Peruanas) |
 Peru |
Academic / research |
1996 |
0 |
0 |
0 |
| Phase Four, Inc. (Phase Four) |
United States |
Commercial |
2015 |
0 |
0 |
0 |
| Philco (Philco) |
United States |
Commercial |
1962 |
0 |
0 |
0 |
| Philippine Agila Satellite Inc. (PASI) |
 Philippines |
Commercial |
1994 |
0 |
0 |
0 |
| Phillippines Space Agency (PhilSA) |
Philippines |
Government / agency |
2019 |
0 |
0 |
0 |
| Phillips (Phillips) |
 Netherlands |
Commercial |
1891 |
0 |
0 |
0 |
| Phillips Petroleum, Rocket Fuels Division, Air Force Plant 66 (Philips Rocket) |
United States |
Commercial |
1952 |
0 |
0 |
0 |
| Physical Research Lab, Ahmedabad (PRL) |
 India |
Government / agency |
1947 |
0 |
0 |
0 |
| Physical Sciences, Inc. (PSI) |
United States |
Commercial |
|
0 |
0 |
0 |
| Physical Synthesis (Physical Synth.) |
United States |
Commercial |
2020 |
0 |
0 |
0 |
| PICOSATS Srl. (Picosats) |
 Italy |
Commercial |
2014 |
0 |
0 |
0 |
| PION Labs (Pion) |
 Brazil |
Commercial |
2019 |
0 |
0 |
0 |
| PLA Air Force (PLAAF) |
China |
Government / agency |
1949 |
0 |
0 |
0 |
| PLA Rocket Forces (PLA RF) |
China |
Government / agency |
2016 |
0 |
0 |
0 |
| Planetary Resources (PRI) |
United States |
Commercial |
2010 |
0 |
0 |
0 |
| PlanetSpace (PlanetSpace) |
United States |
Commercial |
|
0 |
0 |
0 |
| Planetum, Stefanik Observatory (Planetum) |
 Czechia |
Academic / research |
2018 |
0 |
0 |
0 |
| Platzi (Platzi) |
United States |
Commercial |
2014 |
0 |
0 |
0 |
| PO Strela (PO Strela) |
|
Commercial |
1986 |
0 |
0 |
0 |
| PO Yuzhniy Mashinostroitel'niy Zavod (Yuzhmash) |
 Ukraine |
Government / agency |
1966 |
0 |
0 |
0 |
| Polaris Program (Polaris) |
United States |
Commercial |
2022 |
0 |
0 |
0 |
| Polish Aviation Institute (PAI) |
 Poland |
Government / agency |
1926 |
0 |
0 |
0 |
| Polish Space Agency (POLSA) |
Poland |
Government / agency |
2014 |
0 |
0 |
0 |
| Polytechnic University of Milan (PoliMi) |
Italy |
Academic / research |
1863 |
0 |
0 |
0 |
| Polytechnic University of Turin (PolyTorino) |
Italy |
Academic / research |
1906 |
0 |
0 |
0 |
| Portal Space Systems (Portal Space) |
United States |
Commercial |
2021 |
0 |
0 |
0 |
| Poudrerie Royale (Poudrerie Nationale) (POUDR) |
France |
Government / agency |
1660 |
0 |
0 |
0 |
| Prifysgol Aberystwyth (Aberystwyth University) (Aberystwyth) |
United Kingdom |
Academic / research |
2007 |
0 |
0 |
0 |
| PRIMEX Technologies (Primex) |
United States |
Commercial |
1997 |
0 |
0 |
0 |
| Prince Motor Co Ltd (Prince Motor) |
 Japan |
Commercial |
1961 |
0 |
0 |
0 |
