- Guido, d'Arezzo1
- Guidoni, Luigi1
- Guielma1
- Guillaume d'Orange (Chansons de geste)1
- Guillaume, de Sabran1
- Gunnery1
- Gurrea Pelliparinus, Johannes de1
- Guy of Warwick (Legendary character)--Romances1
- Guyana1
- Guzman family1
- Guzman, Alfonso Perez de, 1256-13091
- Gynecology1
- Gómez, Julián1
- Gómez, Martín1
- Gómez, Pedro (undifferentiated)1
- Hadith (Shiites)--Authorities1
- Hadith--Abrogator and abrogated Hadith1
- Hadith--Evidences, authority, etc.1
- Hadith--Study and teaching1
- Hadrian, Emperor of Rome, 76-1381