This book provides a broad survey of historical and contemporary treatments of identity in various branches of Applied Linguistics, identifying common themes and areas for future research. The volume explores theoretical and methodological approaches and features detailed empirical accounts and case studies. The book not only presents current debates in Applied Linguistics and related fields but also the theoretical and practical implications of studying identity from various perspectives and disciplinary approaches. It also offers researchers a new approach to the study of identity: 'The Dynamic Integrated Systems Approach'. As such Identity in Applied Linguistics Research is an ideal text for advanced undergraduate and postgraduate students, and academics and practitioners working on issues of identity.