This is a list of articles in philosophy of religion.(See also: List of philosophers of religion) * A Grief Observed * A History of God * A Letter Concerning Toleration * A New Model of the Universe * A Secular Humanist Declaration * A. H. Almaas * Abandonment (existentialism) * Abd al-Karīm ibn Hawāzin al-Qushayri * Abhidharma * Abraham Joshua Heschel * Absolute (philosophy) * Absolute atheism * Absolute Infinite * Abstinence * Abu'l Hasan Muhammad Ibn Yusuf al-'Amiri * Abu Sulayman al-Sijistani * Accidentalism * Acosmism * Actus purus * Adevism * Adi Shankara * Adriaan Koerbagh * Afshin Ellian * Afterlife * Age of Enlightenment * Agnostic atheism * Agnostic theism * Agnosticism * Ahimsa * Ahmad Sirhindi * Al-Farabi * Al-Ghazali * Al-Kindi * Al-Shahrastan