I
- Iamblichus (writer) - novelist
- Iamblichus (philosopher) - Neoplatonist philosopher
- Iambulus - writer
- Iasus - two early kings
- Ibycus - poet
- Ictinus - architect
- Idomeneus (writer) - writer of Lampsacus
- Ion of Chios - poet
- Iophon - tragedian
- Iphicrates - Athenian general
- Irenaeus - theologian
- Isaeus - orator
- Isaeus (Syrian rhetor)
- Isagoras - archon of Athens
- Isidore of Alexandria - Neoplatonist philosopher
- Isidorus of Miletus - architect
- Isigonus - writer
- Isocrates - rhetorician; Spartan general
- Ister of Cyrene - writer
- Isyllus - poet
Read more about this topic: List Of Ancient Greeks