Parentless Concepts
- questionnaire
- Prudentius
- Pruneau, Jacobus
- Prussia
- Psellus, Michael
- Publius Cornelius Tacitus
- Publius Ovidius Naso
- Puecher
- Pythagoras
- Qeshm Island
- Quattuor tractatus insignis Nebulonis qui se Prophetam dicit
- Questenberg
- Questenberg, Gerhard von
- Questenberg, Hermann von
- Quinget, Caspar
- Qur'an
- Qur'an in Persian
- Qur'an with interlinear in Turkish
- ra
- Rabanus Maurus
- Rabbi Judah Löw Maharal
- Rabbi Judah Löw Maharal, Netzach Yisrael
- Rabbi Ya‘aqov Ashkenazi
- Rader, Matthäus
- Radzin