This paper examines the nexus between oil pipeline vandalism and national security in Nigeria. Comprehending national security in terms of sustainability development and livelihood, the paper seeks to establish the implications of oil pipeline vandalism for Nigeria’s national security. By way of descriptive analysis, predicated on empirical evidence, the paper posits that oil pipeline vandalism is a threat to Nigeria’s national security. In view of its adverse impacts as exemplified in loss of life, economic losses, environmental degradation, and pipeline explosions, the paper submits that oil pipeline vandalism portends serious danger for national sustainabilityof Nigeria.