This chapter deals with the contribution of (international or supra-national) regions to development. Regional integration projects always have development objectives, but whether these objectives are achieved is an empirical question. It focuses on the role of regions and Regional Organizations (ROs) in the design and implementation of social development policies, including: regional redistributive policies, regional promotion and protection of democracy, and regional protection of Human Rights (HRs). In the second section (Regional development finance), the chapter considers how regional organizations are contributing to financing development policies and projects. The third section (Regional redistributive policies) discusses how regions serve as redistributing platforms, section four (Regional promotion of democracy) assesses the contribution of regions to the promotion and protection of democracy, and section five (Regional protection of rights) investigates how regional arrangements and courts are playing a role in the protection of HRs. The chapter concludes with a presentation of some possible ways forward.