| Protomärtyrer | protomartyr |
| Märtyrer | martyr |
| Prompter | teleprompter |
| Protestler | protester |
| Proletarier | proletarian |
| Protestierer | protester |
| Protolyse | protolysis |
| Protosprache | proto-language |
| Protostern | protostar |
| Prototyp | prototype antetype prefiguration preliminary model |
| Provokateur | provocateur |
| protrahieren | protract |
| Rotarier | Rotarian |
| Photometeor | photometeor |
| Photopapier | photographic paper |
| Azotobakter | Azotobacter |
| Onomastiker | onomastician |
| Romantiker | romantic romanticist |
| Profitmacher | profiteer |
| Proletarierin | proletarian |