Administrative detention of aliens who have deported is a commonlyaccepted procedure around the world. Administrative detention could be definedas detention of the aliens who have been decided to be deported owing to certainreasons in predetermined repatriation centers till the deportation procedure iscompleted. Although there was no legal basis, in the period of the older lawbefore the Law on Aliens and International Protection, aliens who have deportedhad been taken under administrative detention. By the current Law on Aliens andInternational Protection, the practice of administrative detention of aliens whoare deported had a legal basis and the reasons and supervision of administrativedetention, notifications to parties, the right to appeal against the administrativeactions are regulated in a detailed manner. Though the practice of administrativedetention of aliens who are deported is not new, current regulation by the Lawwhich is recent and how it influences the practice necessitate making this studyand presenting its functionality.