Green supplier development (GSD) is an important operational strategy to improve supply chain environmental performance. The emergent field of GSD has been evolving. However, few GSD reviews have been published on this topic. The purpose of this chapter is twofold: to identify areas of current research interests, and potential directions for future research in green supplier development. Findings show that advancing knowledge into how multiple tiers, broadersocial dimensions, technology and other supply chain management activities can be further integrated into GSD. Overall, these areas are fertile for further investigation as refinements in the research occur.