- p-height
- Phelps, R.R.
- phenomenon
- phi-coefficient
- phi-convergent sequence
- phi-convergent series
- phi-curve
- phi-density
- phi-descent
- phi-function
- phi-limit
- Philippos (of Opos)
- Phillips, D.L.
- Phillips, R.S.
- Philo
- Philolaos (of Croton)
- Philo line
- Philo problem
- philosophy of mathematics
- Philps, R.R.
- phi-number system
- phi-prime
- phoneme
- phonetics
- photomeasurement