Abstract: The study investigated microfinance banks and economic growth in Nigeria from 1999 to 2018. Secondary data were obtained from Central Bank of Nigeria statistical Bulletin. Data obtained were analyzed using ordinary least square regression techniques. The result of the estimation regression shows that there is a positive relationship between microfinance bank credit and real gross domestic product which represent economic growth. The study therefore recommended that microfinance should be involved in community activity projects to increase the level of economic growth and development in Nigeria