The paper highlights the development of Iraqi Kurdistan relations with Republic of Turkey after 2003. The author demonstrates, that reorganization of Iraq in federal state gave Kurdistan Region new opportunities for social, economic and political development, among those, the opportunity to build own relationships with neighbor countries. Relations with Republic of Turkey become one of the most important directions of foreign relations of Kurdistan Region. It is emphasized that initially negative attitude of Ankara towards the changes in political status of Iraqi Kurdistan was determined first of all by the anxiety that political achievements of Kurds in Iraq could stimulate Kurdish movement in Turkey itself. But in the new situation Turkey leadership had made stake on full-scale development of the relation with Kurdish autonomy, aiming to make it rather tool of its policy in the region then potential threat for Turkey’s interests. Its pivot was created by Turkey economic advance in Kurdistan Region, first of all cooperation in the field of energetic projects. In the context of Turkey new ambitious strategy at the Middle East, its aspiration to become effective go-between and attractive economic partner, Iraqi Kurdistan, friendly disposed to Ankara, had to be an important factor of Turkey influence on the whole Iraq. As for Erbil, partnerships with Turkey gave the possibility to secure its own centre-independent revenue source and become strong argument in many discussions with Baghdad. The author concludes that despite of getting important bonuses landlocked Iraqi Kurdistan in relation with Turkey appeared to be much weaker and dependent partner. Ankara control over pipelines is crucially important for the economy of Kurdish autonomy. Possibility of independence of Iraqi Kurdistan is perceived in Ankara as an unacceptable scenario, threatening to shatter dangerously the situation in Turkey and the whole Middle East. Despite this, now all the factors which lead to previous rapprochement of Iraqi Kurdistan and Turkey, still to be actual. Both sides have their own set of important reasons for farther cooperation. The «red line» and main challenge for it is Kurds aspiration to create an independent state. Key words: Iraqi Kurdistan; Turkey; Turkey foreign policy; Region Kurdistan foreign relations; energy industry; referendum on independence of Iraqi Kurdistan.