The dependence of various stock markets plays a vital role in diversification while selecting securities in an investor's portfolio. This study examines interdependence among the East Asian stock markets in relation to the Karachi Stock Exchange. Monthly data ranging from 2000 to 2010 is included and tested in this paper. This relationship is tested by using descriptive statistics and correlation matrix. Data stationarity is ensured by Unit Root Test. Evidence from Granger Causality and Impulse Response Test prove no relationship between KSE and stock markets of the East Asian countries while there exists certain level of unidirectional relationship from Japan to China and from Japan to Pakistan.