Legal and Political magazines
- Clothing, Religious
- Colson, Charles W. (1931-), Presidential Aide and Religious activist
- Communes
- Coptic Orthodox Church
- Cortese, Aimee García (1929-), Evangelist
- Creation Spirituality
- Creeds
- Crowley, Aleister (1875-1947), Occultist.
- Crypto-Judaism
- Cult Awareness Network
- Culture Wars
- Cursillo Movement
- Cyber Religion
- Da'wa
- Dalai Lama (1935-), Spiritual Leader, Head of State
- Death of God
- Devils, Demons, and Spirits
- Dispensationalism
- Divine Light Mission
- Divine Principle