- Judaism--Customs and practices2
- Judaism--Liturgy2
- Judaism--Liturgy--Texts1
- Judgment of God2
- Jugurthine War (111-105 B.C.)1
- Julian, of Eclanum, Bishop, 380-approximately 4551
- Justa, Saint, -approximately 2871
- Justinian I, Emperor of the East, 483?-5651
- Karo-Batak dialect1
- Kekchi language1
- Ketubah1
- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)2
- Kings and rulers23
- Kings and rulers--Duties1
- Kings and rulers--Genealogy2
- Knights of Malta1
- Knotesford, John, -15891
- Knowledge, Theory of2
- Knowledge, Theory of (Religion)1
- Kufic1