Abstract The problem of evil is perhaps the greatest philosophical issue that faces all humans irrespective of their religious persuasion and nationality. In recent times some tragic happenings in Nigeria such as insurgency, kidnapping, and armed robbery has befallen the nation which are perceived as evil. This paper sets out to answer the question of why a good God will permit such evil in Nigeria. Leibniz’s theodicy of the “The best possible world” is analysed and contextualized as a template of perceived solution. It is discovered that Leibniz’s theodicy of “the best possible world” is logically applicable to Nigeria; God optimizes a world between simplicity, harmony, and productivity and has given us a world that is the best for us among many other possible worlds. Evil and Good are products of God’s sovereignty. The paper concludes that the evil and the good of Nigeria make the nation the best of all possible nations for Nigerians. 1