Rojava–Kurdistan Region relations refers to the relationship between the Autonomous Administration of North and East Syria (commonly called Rojava), and the Government of Iraq's Kurdistan Region.

There has been military cooperation with Kurdistan Region and the United States in the conflict against Islamic State of Iraq and the Levant (ISIL), although neither gives official support for Rojava or its People's Protection Units (YPG).

Although KCK member organisations in the neighbouring states with autochthonous Kurdish minorities are either outlawed (as in Iran and Turkey) or politically marginal with respect to other Kurdish parties (as in Iraq), the PYD-governed NES region has acquired the role of a model for the KCK political agenda and blueprint in general.

During the Siege of Kobanî, a large number of ethnic Kurdish citizens of Turkey crossed the border and volunteered in the defence of the town.

Upon their return to Turkey, some of these took up arms in the renewed Kurdish–Turkish conflict, where skills acquired by them during combat in Kobanî brought a new quality of urban warfare to the conflict in Turkey.