Author
- Johannes Schöner1
- Johannes Tostius1
- Johannes von Kastl1
- John Burgh1
- John Chrysostom1
- John Cornelius1
- John Felton1
- John XXI1
- Joseph Trani1
- Joseph ben Ephraim Karo1
- Joseph ben Moses Sarfati1
- Joseph ibn Migash1
- Josephus1
- Joshua Benzion Segre1
- Juan de Torquemada1
- Julius II1
- Jullien Gervais1
- Kamalākara Bhaṭṭa1
- Kanada1
- Keśavamiśra1