Urarina is an endangered language spoken by less than 3,000 people in the rainforests of North-western Peru and is not related to any other language family in the area. This book provides a comprehensive description of Urarina grammar covering all areas of the language. Features not commonly found in other languages include the word order (object-verb-subject) and a fascinating array of morphological forms. A Grammar of Urarina is based on the framework of basic linguistic theory, which will be accessible to scholars from a wide range of backgrounds. The book fills a gap not only for studies in Amazonian languages but also from a typological perspective.