- Pertussis vaccine
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- Pes
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- Peutz-Jeghers syndrome
- Pevonedistat
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- Pfeiffer syndrome
- Pfizer
- Pfizer-BioNTech COVID-19 vaccine
- Pfu DNA polymerase
- Phacodonesis
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- Phaeohyphomycosis
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- Phagosome
- Phakic intraocular lens
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- Phalanges
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- Pharmacovigilance Programme of India
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- Pharyngeal arches
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- Phase I trials
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- Phase variation
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- Phase-contrast imaging
- Phase-contrast microscopy
- Phaseolus vulgaris
- Phellandrene
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- Phenacetin
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- Phenocopy
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