This study examine the relationship between banking sector development and economic growth in South Asian Association for Regional Cooperation (SAARC) over the period of 1980-2013 by entailing ordinary least square (OLS), two stages least square (TSLS), and panel TSLS fixed-effect model. Key banking sector development variables include money and quasi money (RQM) and domestic credit to private sector by banks (PC) have a positive and statistically robust effect on economic growth in all models. The study concludes that no economy can develop without a substantial growth in the banking sector and it is important to have a sound and rigorous banking system for building a sustained economic growth. Therefore, the SAARC economies are suggested to focus on the development of the banking sector for their long run growth.