- Constellations--Names1
- Controlled vocabularies1
- Coptic Christian saints1
- Correspondence1
- Cosmography1
- Council of Trent1
- Courtly love1
- Courts and courtiers1
- Cryptography1
- Dafrī, ʻUmar ibn ʻUmar, d. 1668. Durrah al-munīfah fī fiqh Abī Ḥanīfah1
- Dakṣiṇakālikā (Hindu deity)1
- Dakṣiṇāmūrtistotra (Śaṅkarācārya)1
- Dalālat al-ḥāʼirīn (Maimonides, Moses)1
- Dawwānī, Muḥammad ibn Asʻad, 1426 or 1427-1512 or 1513. Risālah al-jadīdah fī ithbāt al-wājib1
- Dawwānī, Muḥammad ibn Asʻad, 1426 or 1427-1512 or 1513. Risālah qadīmah li-ithbāt al-wājib1
- Dawwānī, Muḥammad ibn Asʻad, 1426 or 1427-1512 or 1513. Risālat al-Zawrāʼ1
- Dawwānī, Muḥammad ibn Asʻad, 1426 or 1427-1512 or 1513. Ḥawrāʼ ʻalá al-Zawrāʼ1
- Dayrūṭī, Muḥammad ibn Aḥmad, -1515 or 1516. Dimyāṭīyah1
- Days1
- De anima (Aristotle)1