Author
- Joseph Trani1
- Joseph ben Gorion1
- Joseph ben Judah ibn Aknin1
- Joseph ben Moses Sarfati1
- Joseph ibn Migash1
- Josephus1
- Joshua ben Israel Benveniste1
- Joshua ibn Shuaib1
- José Pellicer1
- Juan Páez de Castro1
- Juan de Garnica1
- Judah Hadassi1
- Judah Leib Prossnitz1
- Julian of Toledo1
- Jullien Gervais1
- Junayd ibn Sandal Baghdādī1
- Justinian I1
- Jörg Muelich1
- Jāwushzādah, Ibrāhīm ibn Muḥammad, d. 1640 or 11
- Ka'b bin Zuhayr1