Terrorism is a global social problem that is presently receiving an overwhelming attention and concern from all corners. The government, researchers, policy makers, Non-Governmental Organizations and law enforcement are all striving daily to figure a way out of this malady. This is because the impact of terrorism is devastating and destructive in nature. Everyone is in one way or another affected by the effect of this cankerworm. If left to thrive, it might drag the world into oblivion. This study examines terrorism, insecurity and youth criminality in Nigeria: a critical view from a criminological lens. The study made use of Leonard Berkowitz Frustration Aggression Theory (1989) and Robert Agnew General Strain Theory (GST, 1991) to explain terrorism, insecurity and criminality in Nigeria. The study employed qualitative study using Key Informant Interview (KII) and Focus Group Discussion (FGD) using the youths as the population or universe. The study concluded that terrorism is universally abhorred and generally seen as unlawful, barbaric and inhuman crime. It is a crime against man and the society that must not be allowed to strive because it erode peace, destroy properties, lead to loss of lives and stampede growth and development. It was recommended in this study that the fight against terrorism should be an all-embracing one. Thus, the Government, parent, citizens and youth must all be proactive in the fight against terrorism via effective strategize.