This paper aims to study the effect of fiscal and monetary policy on economic growth in Nigeria. The major objective of this research work is to examine how monetary policy influences economic growth in Nigeria. In the process of carrying out this research work, various variables such as government total expenditure, government total revenue, inflation, gross domestic product, interest rate, unemployment rate, and broad money supply were adopted. The data used in this research were secondary data obtained from the World Development Indicators (WDI) and Central Bank of Nigeria Statistical Bulletin. Findings were drawn from the research that money supply and government total expenditure and revenue has a significant impact on economic growth in Nigeria. Therefore, recommendation is suggested that to maintain a stable economic growth in Nigeria, the central bank need to inject more money into the economy and the government should use her revenue and expenditure at full optimization. The Autoregressive Distributed Lag Model (ARDL) was adopted as the estimation technique.