This policy brief focuses on the urgency of investing in youth development in order to reap the rewards of the demographic dividend in many Arab countries. It discusses the tools and policy options that can be instrumental in facilitating youth development, noting the dynamic nature of demographic transitions and the declining fertility rate in the Arab region. The brief confirms the important role that the World Programme of Action for Youth (WPAY) can play in guiding the development of cross-sectoral national youth development policies and programmes of action.