This volume foregrounds the importance of regional cooperation in the context of food security challenges in South Asia. South Asia holds the key to global achievement of SDG targets of ending hunger and malnutrition – it accounts for nearly one-third of food-insecure people on the planet, with every third child suffering from stunting due to malnutrition. Similar food preferences, production systems, and the transboundary nature of agrarian ecosystems call for coordinated action by South Asian countries, complementing national actions dealing with food security challenges.