- Pharmacology: This is the study of drug action.
- Pharmacy:It deals with the effective and safe use of drugs for diseases and disorders.
- Phenomenology:The study of the structures of consciousness.
- Philately: The collection and study of postal stamps.
- Philology: The study of language especially in its historical and comparative aspects.
- Phonetics: The study of speech, sounds and their production, transmission, reception.
- Phrenology: The study of the faculties and qualities of mind from the shape of the skull.
- Phycology: It is the study of algae.
- Physical Chemistry: It involves the application of physics to the study of chemical systems.
- Physical science: The study of natural laws and processes other than those peculiar to living matters (Physics, Chemistry and Astronomy).