Today, many researchers and international financial institutions are interested in measuring and identifying the dynamic interdependency among different financial market and their volatility changes. Index. In order to examine the spillover effect of the foreign currency market on the domestic monetary and financial system in Iran, this paper investigates volatility spillover of foreign currency exchange rates (like dollar and euro to rial) on the banking sector index in the stock market. In this research, we use logarithmic returns and apply them in multivariate GARCH models (in four different methods) for the twelve years periods (from April 2005 to March 2017). This paper is aimed to identify the effect of foreign currency market fluctuations on the banking sector index in order to help to manage financial fluctuations, policy-making and risk management decisions. The results indicate a positive conditional correlation between the short-term volatility of dollar exchange rate and long-run volatility of euro exchange rate with the banking sector index. Moreover, our findings confirm the existence of spillover effects of exchange rate on the banking sector index.