I
- Ibn Abi Sadiq, "The Second Hippocrates", Avicenna's disciple
- Ibn Haytham, physicist
- Ibn Khaseb, physician
- Ibn Khordadbeh, geographer
- Ibn Rustah
- Ilaqi, Yusef, Avicenna's pupil
- Ilyas, Yusef ibn, physician
- Isfahani Abol-fath, mathematician
- Ibn Sina, (Avicenna), Philosopher and Physician
- Isfahani, Jalaleddin, physician
- Isfahani, Husayn, physician
- Istakhri, geographer, gives the earliest known account of windmills
- Iranshahri, philosopher, the teacher of Muhammad Zakaria Razi.
Read more about this topic: List Of Persian Scientists And Scholars