- Judaism--Liturgy--Texts1
- 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
- Kings and rulers--Duties1
- Knights of Malta1
- Knotesford, John, -15891
- Knowledge, Theory of (Religion)1
- Kufic1
- Kufr (Islam)1
- Kyi︠e︡vo-Pechersʹka lavra1
- Kyriales1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)1
- Ladino poetry1
- Ladron de Guevara family1
- Lafões, Pedro Henrique de Bragança, Duque de, 1718-17611