Author
- Henry Howard, 1st Earl of Northampton1
- Henry Suso1
- Henry VIII of England1
- Hibat Allāh ibn Najm al-Dīn Ibn al-Bārizī1
- Holy Roman Empire1
- Honorat Bovet1
- Hugh of Fouilloy1
- Hugh of Saint Victor1
- Hugo Trottus1
- Ibn Asakir1
- Ibn Hisham Al-Ansari1
- Ibn Sab'in1
- Ippolito Libri1
- Isaac ben Joseph of Corbeil1
- Isaiah di Trani1
- Ismail ibn Hammad al-Jawhari1
- Jabir ibn Hayyan1
- Jacobus de Voragine1
- Jalal al-Din Davani1
- Jalal al-Din al-Qazwini1