The practice and study of medicine in Persia has a long and prolific history. The ancient Iranian medicine was combined by different medical traditions from Mesopotamia, Egypt, India, China and Greece for more than 4000 years and merged to form what became the nucleus and foundation of medical practice in the European countries in the 13th century. The Iranian academic centers like Jundishapur University (3rd century AD) were a breeding ground for the union among great scientists from different civilizations. These centers successfully followed their predecessors’ theories and greatly extended their scientific research through history. Iranian physicians during the glorious Islamic civilization had a tremendous share in the progress of medical sciences. The excellent clinical observations and physical examinations and writings of Iranian scientists such as Rhazes (Al-Razi, 865-925 AD), Haly Abbas (Ali ibn-al Abbas-al Majusi, died 994 AD), Avicenna (Abou Ali Sina, 980-1037) and Jurjan (Osmail ibn al-Husayn al-Jurjani, 110 AD) influenced all fields of medicine The new era of medicine in Iran begins with establishment of Dar-ul-funoon in 1851, which was the only center for modern medical education before the establishment of Tehran University. Following the establishment of the Tehran university school of medicine in 1934 and the return of Iranian graduates from the medical schools in Europe, much progress was made in the development and availability of trained manpower and specialized faculties in medicine. After the Islamic revolution by the growing spirit of independence inspired by the Iranian government the number of medical schools and medical students increased more than 10 times. For the 1st time in recent modern history the Iranian medical universities started to offer post-graduate specialized degrees in basic, clinical and engineering sciences.