- Javanese language1
- Jerónima de la Asunción, madre, 1555-16301
- Jesuit drama, Spanish1
- Jewish sermons, Hebrew1
- Jews1
- Jiménez de Cisneros, Francisco, 1436?-15171
- John II, King of Aragon, 1397-14791
- John IV, King of Portugal, 1604-16561
- John Manuel, Prince of Portugal, 1537-15541
- John V, King of Portugal, 1689-17501
- Karo-Batak dialect1
- Kāsānī, Aḥmad Khvājagī1
- Lafões, Pedro Henrique de Bragança, Duque de, 1718-17611
- Lapidaries (Medieval literature)1
- Latin language--Grammar1
- Latin language--Study and teaching1
- Latin poetry1
- Laudatory poetry1
- Laude1
- Law1