The spate of violent attacks by Boko Haram in recent times which has been characterized by the abduction and killing of people; destruction of houses, schools, health care centres, churches, mosques and farms has plunged the country into a chronic state of insecurity. The basics of food, health, shelter, education and protection which constitute security to the human individual primarily, has therefore been threatened by the Boko Haram insurgency. The paper therefore examines the threats of Boko Haram insurgency on human security in Nigeria. Findings reveal that insurgency has claimed a lot of lives and property; compounded the food and nutrition insecurity situation in the country; aided the spread of infectious diseases; denied millions of children and youths access to education; increased the number of internally displaced persons with dire need of shelter and has caused people to live in constant fear and anxiety. This paper concludes that Boko Haram Insurgency has negative impact on human security, and recommends that counter-insurgency will be effective only when issues of poverty, corruption and bad governance are effectively addressed.