After a short historical introduction of the phenomenon of enforced disappearances, the authoress analyzes it from the point of view of international human rights law and international humanitarian law. Enforced disappearance is one of the most serious violations of human rights, very often described as the infrigment of human dignity. The characteristic feature of this crime comprises the fact that the victim is devoid of any legal protection and the authorities deny having her or him under control; thus they refuse the victim any right, in particular a right to a fair trial. The article contains analysis of the following human rights law instruments: the UN General Assembly Declaration on the Protection of all Persons from Enforced Disappearance (1992) and the UN Convention for the Protection of all Persons from Enforced Disappearance (2006). It also mentions the Statute of the International Criminal Court (1998) and Inter-American Convention on Forced Disappearance of Persons (1994).The second part - dedicated to international humanitarian law - presents provisions relevant to the protection from enforced disappearances. They are to be found especially in the Geneva Conventions of 1949 and their Additional Protocols of 1977.Taking into account all the provisions, the authoress explains the contemporary example of enforced disappearances namely American renditions or extraordinary renditions undertaken during the so called 'war on terrorism'. Renditions meet all the legal conditions of enforced disappearances which the authoress attempts to prove.