This research critical examine the impact of Naira devaluation on economic growth in Nigeria. That without exchange rate, the exchange of goods and services among trading partners will be focused with a lot of problems which may virtually narrow it down to trade by barter. Thus exchange rate is also used to determine the level of output growth of the country. Nigeria is one such economy where demand for locally produced goods is at such a pitiful level. This makes it difficult for the exportation of such goods to the economies they were assumed to have from. As a result of the excess of import-over export Nigeria increase the cost of product and also result to inflation (cost push). By making the domestic currency relatively cheaper, local production and exportation of commodities is thereby encouraged. This will help solve unemployment problem and create a favourable balance of trade. This study made use of the ordinary least square (OLS) regression techniques in analyzing the impact of Naira devaluation on economic growth in Nigeria .the battery test and also t-statistic table was carried out and our findings is that real exchange rate has significant impact on the economy which means that Naira devaluation have positive impact on the economy. It was therefore recommended that the policy devalues apt attention and should pursue. .