| plâtrier | plasterer |
| Pléaux | Pléaux |
| plébiscite | plebiscite |
| plébéien | commoner |
| Pléiade | Pleiad |
| Pléiades | Pleiades |
| Pléioné | Pleione |
| Pléiotropie | Pleiotropy |
| Pléistocène | Pleistocene |
| plénier | plenary |
| plénipotentiaire | plenipotentiary |
| plénitude | plenitude |
| pléonasme | pleonasm |
| Plérion | Pulsar wind nebula |
| pléthore | galore |
| Plön | Plön |
| PM | PM |
| PMA | PMA |
| PME | small business |
| PMI | Small and medium enterprise |
| PN | PN |
| PNA | Peptide nucleic acid |
| PNB | GNP |
| pneu | tire |
| pneu crevé | flat |
| pneu d'automobile | car tyre |
| pneu de rechange | spare |
| pneu de secours | spare tyre |
| pneu radial | radial tire |
| Pneu tubeless | Tubeless tires |
| pneu à carcasse radiale | radial tire |
| pneu à plat | flat tyre |
| pneumatique | pneumatics |
| pneumoconiose | pneumoconiosis |
| Pneumocystose | Pneumocystis jiroveci pneumonia |
| Pneumocyte | Pneumocyte |
| Pneumologie | Pulmonology |
| pneumonie | pneumonia |
| Pneumonie atypique | Severe acute respiratory syndrome |
| Pneumopathie atypique | Pneumonia |
| Pnictogène | Nitrogen group |
| PnP | Plug-and-play |
| PNY Technologies | PNY Technologies |
| Pnyx | Pnyx |
| PO | GP |
| Po-khun Ramkhamhaeng | Ramkhamhaeng the Great |
| Po-o-uli masqué | Poʻo-uli |
| Poaceae | Poaceae |
| Poales | Poales |
| Pobeda | Pobeda |
| Pobeda Prilep | FK Pobeda |
| Pobediteli | Pobediteli |
| Pobladura | Pobladura |
| Pocahontas | Pocahontas |
| pocessus anaérobie | anaerobic process |
| pochard | alcoholic |
| poche | pouch |
