| Protoboard | breadboard |
| Protozoon | protozoan |
| Proband | experimentee |
| Protokoll | minutes record report protocol |
| Protologie | protology |
| Protostern | protostar |
| Skateboard | skateboard |
| Snowboard | snowboard |
| Storyboard | storyboard |
| Whiteboard | whiteboard interactive whiteboard |
| Proktologin | proctologist |
| Pronghorn | pronghorn |
| Pronoia | pronoia |
| Protoplanet | protoplanet |
| prograd | prograde |
| protuberant | protuberant |
| Proktologe | proctologist |
| Promovend | doctoral candidate |
| Proporz | proportional representation election system |
| Protektor | protector |