Work Title
- On the murder of Herodes 1
- On the team of horses 1
- Oneirocritica 1
- Onomasticon 1
- Opera 1
- Opera Historica 1
- Opilius Macrinus 1
- Optica 2
- Opticorum recensio Theonis 1
- Opus Agriculturae 1
- Opus Maius 1
- Opus Paschale 1
- Opusculum 1
- Ora Maritima 1
- Oracula 1
- Oratio 3
- Oratio I 1
- Oratio II 1
- Oratio Pro Patres 1
- Oratio Pro Synesio 1
