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Abdolali Tavajjohi Ph.D. Candidate, Tarbiat Modares University Ali Hossein Najafi Abrand Abadi Associate Professor, Department of Law, Shahid beheshti University Victim, is one of the most important elements of crime event, regrettably for which no actual determining position has been found in victimology researches. The authorities of retribution and victimology have focused their best attempts on crime, criminal and conviction; consequently, the victim who often plays an important role in the occurence of the crime is ignored and forgotten. As victimology emerged in recent decades, Concrete steps were taken along the way of scientific study of victims and identitication of their features and action in committing crimes as well. Besides the existence of problems such as lack of sources, the newness of theories, ambiguity in the limits of the subject which make any research about new knowledge difficult, researching and studing victimology include particular problems and constraints without overcoming them, the value and validity of the theories related to this new branch of victimology will be questionable. This article takes into consideration one of the most important problems on the way of victimologists. Considering unreported victims in the various countries of the world, the writers have examined this same subject within a population of one thousand (1000) and come to the result that unfortunately over 60 percent of the victims in Iran have never reported themselves. Reasons such as lack of evidence, distrusting the police preventing loss of face and personality or having family relation with the criminal are the most common reasons why victimization is not reported. Finally, it is concluded that plans and strategies of the related authorities in defying crime would bear no real value of efficiency unless they are based on factual number of victims. So, the responsibles of societies are required to reduce the number of unreported criminal cases-through drawing the victims’ confidence and providing them with facilities of hearing - which often lead to individual vengeane or vicim's seclusion and in other words a new crime or victim.

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