Abstract
This research deals with the referendum as a manifestation of semi-direct democracy, it reviews the constitutional and legal texts that dealt with the referendum in Iraq, and determines the legal nature of the referendum,and its impact at the federal or Kurdistan legislations. This democratic process in theory and practice by standing on the extent of its applications in Iraq without missing mention to shed light on the position of the constitutional judiciary represented by the Federal Supreme Court of Kurdish referendum that happened on 25 September 2017.