The phenomenon of youth involvement in crime and terrorism is understudied. Youth commit crimes many facilitating activities for terrorism because juvenile arouse less suspicion and have diminished responsibility if arrested. Youth under 25 are involved in many of the criminal activities that facilitate terrorism including participating in the drug trade, acting as couriers and developing the websites that facilitate youth recruitment to terrorism. The links between youth criminal involvement and terrorism deserves more attention that presently exists. This paper which provides an introduction to this subject focuses on the recruitment of youth and the activities they commit for terrorist organizations.