R
- Rāmānuja
- Radhakrishnan, Sarvepalli
- Rand, Ayn Alissa
- Rawls, John
- Recognition, Social and Political
- Reductio ad Absurdum
- Reductionism
- Reichenbach, Hans
- Relational Models Theory
- Relativism
- Reliabilism
- Religion and Politics
- Religion, Philosophy of
- Religious Epistemology
- Religious Language
- Renaissance Philosophy
- Rescher, Nicholas
- Responsibility
- Resurrection
- Ricoeur, Paul
- Right to Private Property
- Rights, Human
- Roman Philosophy
- Rorty, Richard
- Roy, M. N.
- Ross, William David
- Royce, Josiah
- Rousseau, Jean-Jacques
- Russell’s Metaphysics
- Russell’s Paradox
- Russell-Myhill Paradox
- Russian Philosophy