| PHP | PHP |
| PHP Extension and Application Repository | PHP Extension and Application Repository |
| PhpMyAdmin | PhpMyAdmin |
| Phrack | Phrack |
| Phrae | Phrae Province |
| Phragmites | Phragmites |
| Phragmites australis | Phragmites |
| Phreaking | Phreaking |
| Phuket | Phuket Province |
| Phusis | Environment |
| Phuwiangosaurus sirindhornae | Phuwiangosaurus |
| Phycidae | Phycidae |
| Phycodurus eques | Leafy sea dragon |
| Phyllobates terribilis | Golden Poison Frog |
| Phyllopteryx taeniolatus | Weedy sea dragon |
| Phylloscopus trochilus | Willow Warbler |
| PhyloCode | PhyloCode |
| Phylum | Fork |
| Physalia physalis | Portuguese man-of-war |
| Physalis alkekengi | Physalis alkekengi |
| Physeter macrocephalus | Sperm Whale |
| Physic process unit | Physics processing unit |
| Physical Vapor Deposition | Physical vapor deposition |
| Phytophthora infestans | Phytophthora infestans |
| pi | pi |
| Pi greco | Pi |
| pia illusione | wishful thinking |
| Pia Società di San Francesco Saverio per le missioni estere | Xaverian Brothers |
| Piacenza | Piacenza |
| Piacenziano | Piacenzian |
| piacere | like |
| piacere a | like |
| piacere maligno | malicious pleasure |
| piacevole | pleasant |
| piacevole a vedersi | sightly |
| piacevolezza | pleasantness |
| piacevolmente | agreeably |
