This volume presents a state-of-the-art survey of synchronic and diachronic dimensions of Ergativity in the Indo-Aryan language family. It contains an introduction drawing on the most important recent typological and theoretical contributions to this field, plus seven papers about the origin, development and distribution of ergative alignment in ancient and modern Indo-Aryan languages written by well-established expert authors. The articles provide detailed explorations of language-specific synchronic systems or patterns of change, and large-scale studies of the distribution of ergative morphosyntax across the Indo-Aryan languages. The papers have a typological-functional approach and are based on thorough fieldwork experience and/or philological investigation. As the Indo-Aryan language family has played a paramount role in recent theories of Ergativity and of alignment typology and change, this volume is highly relevant to experts working on these languages and to scholars interested in grammatical relations and it will figure in all future debates in these fields