This research is an attempt to assess and explain the position of religion in the governmental system of Iraq. In this regard, the paths where current governmental system and the concept of religion cross, have been traced. On the other hand, to compare "what is" (the current status of religion in the governmental system of Iraq) and "what should be" (as desired conditions), it is required to measure them via determined parameters. As a result, the main enquiry of this article is the compliance -or lack thereof- of the legal system of Iraq with the mentioned parameters. To this end, the basic issues and substantive aspects are reviewed briefly. The parameters in this research are based on the viewpoints of Allameh Seyyed Mohammad Baqir al-Sadr. After surveying the evolution of religion’s position in the constitution laws of Iraq and the history of relevant developments in response to the main question, the review of the components (demographic structure, constitution, international approach and ideological basis of government) shows that despite aiming to institutionalize the rules of religion in the Government, The country still faces fundamental gaps between implementing the religion sentences and establishing good governance. In addition, the comparison of "what is" and "what should be" implies that attempts to define an appropriate position for religion has not been successful. Other factors such as foreign interference, demographic structure and theoretical approach of religion scholars and authorities, have also contributed to the mentioned outcome.