This India Health Report: Nutrition 2015 surveys the trends in maternal and child undernutrition in India. It looks at trends and disparities in these outcomes across geographical regions, socio-economic classes, and demographic groups. Tackling undernutrition and enabling improvements in the determinants of poor nutrition requires actions from multiple actors and sectors, and at multiple levels. In order to develop a contextually relevant, high impact and pragmatic strategy to tackle undernutrition, decision-makers need to be able to understand the extent of the problem and its determinants, and identify the most important areas for intervention. At present, despite broad agreement that nutrition is fundamentally driven by challenges in multiple sectors, there is no single data dashboard that enables a comprehensive view of nutrition and its determinants to enable strategic choices for policy-making at the state-level. The India Health Report: Nutrition 2015 aims to provide its readers with a comprehensive state-level overview of the current nutritional status of under-five children in India, its multiple determinants, and the status of the country's key nutrition-relevant interventions. Data from multiple surveys, databases, and official reports in the public domain have been compiled to create informative dashboards that will help benchmark progress against undernutrition and identify key areas for action at the state level.