This special issue focuses on academic discussions in the field of water cooperation and diplomacy, which have garnered increased attention in recent decades due to growing threats to the use of shared water resources. The contributions in this special issue aim to understand the challenges of transboundary water cooperation and its prospects in the Arab region. The materials illustrate how water cooperation in the Arab region is essential, necessitating more engaged strategies in water diplomacy and regional collaboration. Arab countries have recently been affected by external dominance policies imposed by neighbouring countries regarding water, often struggling to find appropriate responses. The evolution of international water law has not been sufficient to effectively resolve conflicts between countries. However, this issue also highlights that water diplomacy alone is insufficient to address the multifaceted water issues in the region. Many of these problems stem from decades of failure to develop sustainable water management at the local level.