Ruling to Mediterranean of Anatolian Seljuk Empire and its state policy for developing to international transit commerce in that place is very important and worthy of being observable topic. Because of this, Seljuks were included to the foreign trade network with Mediterranean and they became strong to the State both economically and politically. Precautions that were applied by the Anatolian Seljuks against the pirates who were the biggest obstacle for Mediterranean commerce and were the nightmare of merchants composed of basic principal of our study. In this article, different from previous research, it has been examined implementation of commercial policy deterrent effect on the piracy. In this study first of all, Seljukian conquests and the other issues are mentioned in Mediterranean by taking reference of İbn Bibi and Aksarayi’s studies. In addition to this, some historians studies and the other works which were written about commercial treaties were studied carefully. By taking reference about existing resources, this study has been completed with these headlines: according to Anataloian Seljuks Empire’s development of Mediterranean trade conquest of Alanya and Antalya, trade treaties with Cyprus, insurance system of Seljuks, taxcut and free court of justice for Latinas, applying state insurance against pirates’ attacks in the Mediterranean, Caravansaries and defender armies.
Mediterranean, Piracy, State Insurance, Caravansary, Muda