This paper investigates the volatility transmission effect and conditional correlations among crude oil, stock market and sector stock indexes in Saudi Arabia. Using daily data from January 3, 2009 to March 21, 2012 and VAR-BEKK specification, we find significant volatility transmission between oil prices and Saudi stock market. Furthermore, our findings show that sector stock returns significantly react to oil prices changes. In addition, except telecom sector, the results show the presence of volatility transmission between stock market and sector stock market returns.