Author
- Heinrich von Friemar1
- Hernando del Pulgar1
- Hoca Sadeddin Efendi1
- Hugh of Fouilloy1
- Ibn Asakir1
- Ibn Kathir1
- Ibn al-Dubaythi1
- Ibn al-Wardi1
- Ibn ʻAbd al-Riḍá1
- Idris Bitlisi1
- Inayat Khan1
- Ippolito Libri1
- Isaac ben Joseph of Corbeil1
- Iskandar Abkariyus1
- Jacob Saphir1
- Jacobus de Cessolis1
- Jacopone da Todi1
- Jacques de Vitry1
- Jaghmini1
- Jalal Al-Din Al-Khabazi1