Effective supplychain management (SCM) has become a potentiallyvaluable wayof securing competitive advantage and improving organizational performance since competition is no longer between organizations, but among supplychains. This research conceptualizes and develops five dimensions of SCM practice (strategic supplier partnership, customer relationship, level of information sharing, qualityof information sharing, and postponement) and tests the relationships between SCM practices, competitive advantage, and organizational performance. Data for the studywere collected from 196 organizations and the relationships proposed in the framework were tested using structural equation modeling. The results indicate that higher levels of SCM practice can lead to enhanced competitive advantage and improved organizational performance. Also, competitive advantage can have a direct, positive impact on organizational performance.