- Harville, Pierre de.--l. 15631
- Hecuba, Queen of Troy1
- Heraldry1
- Hercules (Roman mythological character)1
- History, Ancient1
- Huguenots1
- Hussites1
- Hymns1
- Hymns, Syriac1
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjiz al-Qānūn1
- Ibn al-ʻImād al-Aqfahsī, Aḥmad, approximately 1349-1405. Manẓūmah fī al-najāsāt al-maʻfū ʻanhā1
- India1
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- Irshād al-adhhān ilá aḥkām al-īmān (Ibn al-Muṭahhar al-Ḥillī, al-Ḥasan ibn Yūsuf)1
- Isagoge (Porphyry)1
- Isfarāyīnī, Muḥammad ibn Muḥammad, -1285. al-Lubāb fī ʻilm al-iʻrāb1
- Islam--Customs and practices1
- Islamic ethics1