Iraq is a prominent identity crisis example. Ethnic and religious multiplicity have caused political and social conflicting divisions. Shiites, Kurds, and Sunnis are the main group players. Kurdish and Arab are ethnic, Shiite and Sunni are religious groups. Islamic Revolution made fundamental changes in Iran’s foreign policy orientation. In Iraq simultaneously, Saddam took power. Different ethnicities and identities had no expressing opportunity. US invasion and Ba''athist overthrow brought Iraq into a new and unstable phase, and various groups and ethnicities expressed their conflicting political and social identity goals and demands. Regional countries particularly Iran have expanded their influence in Iraq by changing the foreign policy orientation, to prevent others from increasing their effect. This study is to analyze and investigate identity crisis impact in Iraq on Iran’s foreign policy orientation emphasizing post-Saddam era (2003-2020) applying Constructivism Theory. The descriptive-analytical method and library resources used in collecting data and information.