The end of the Cold War and termination of mutual support of the great powers from dear decedents, globalization, the fight against terrorism since 9/11 and decrease of support of terrorist Groups by the states and etc. have led terrorist organizations to commence Mafia activities and to secure more financial resources for their own activities. Therefore, some new organizations have been established with a mixed feature, that is, mutual cooperation of mafia organizations and terror organizations. The paper offers an analysis about this development and focuses on the PKK as a case study. Since early 1990s PKK has been involved as a accomplice to mafia organizations but later it was involved directly with this kind of illegitimate activities and now it has a strong linkage we Organized crimes. This linkage contributes to survival of this terror organization and therefore should be considered in developing strategies to contain terrorism.