- Jesus Christ2
- John I, King of Portugal, 1357-14332
- Juana, of Austria, Princess of Portugal, 1535-15732
- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)2
- Latin America2
- Lawyers2
- Letter writing, Turkish2
- Liturgical books2
- Logic, Medieval2
- Magic2
- Manuscripts, Chagatai2
- Manuscripts, Greek (Medieval and modern)2
- Manuscripts, Indic2
- Manuscripts, Japanese2
- Mathematics, Greek2
- Medicine, Medieval2
- Middle East2
- Moral conditions2
- Mulakhkhaṣ fī al-hayʼah (Jaghmīnī, Maḥmūd ibn Muḥammad)2
- Music--Manuscripts2