This study discusses the impact of Unemployment on the Nigeria Gross Domestic Product (GDP). The ultimate objective is to examine the determinant and developmental implication of Unemployment to the Nigerian GDP. Specifically, the study will examine the levels of contributions of other factors like inflation rate and Population growth Rate to the Nigerian GDP. The data for this study was collected from the Central Bank of Nigeria Statistical Annual Bulletin 2012. Two – Stage Least Square of the Simultaneous Equation Model was employed in the data Analysis after data diagnosis. The Results of the joint test shows that Unemployment Rate, Inflation Rate and Population Growth Rate j Download