- Gulshan-i rāz (Shabistarī, Maḥmūd ibn ʻAbd al-Karīm)1
- Gurrea Pelliparinus, Johannes de1
- Guy of Warwick (Legendary character)--Romances1
- Guyana1
- Gynecology1
- Gómez, Julián1
- Gómez, Martín1
- Gómez, Pedro (undifferentiated)1
- Hadith--Abrogator and abrogated Hadith1
- Hadrian, Emperor of Rome, 76-1381
- Haggadah (Palestinian rite)1
- Haggadot--Liturgy1
- Haidar Ali, Nawab of Mysore, approximately 1722-17821
- Haimo, of Auxerre, -approximately 8551
- Hair1
- Hair--Removal1
- Halberstam, Chaim, 1793-18761
- Hallah1
- Hambie, John, active 1558-15591
- Hamerton, William, active 1558-15591