Author
- Giuseppe Vella1
- Gratian1
- Guido de Monte Rochen1
- Hai Gaon1
- Haymo of Faversham1
- Hugh of Balma1
- Hugh of Saint Victor1
- Hugh of Saint-Cher1
- Iacopo da Benevento1
- Immanuel Bonfils1
- Isaac Alfasi1
- Isaac Israeli ben Joseph1
- Isaac of Troki1
- Israel Sarug1
- Jacob Israel Karmi1
- Jacob ben David ben Yom Tov1
- Jacob ben Jacob, ha-Kohen, -approximately 12701
- Jacobus de Voragine1
- Jacopo Ragone1
- James of Viterbo1