This edited book draws on research on identity in language education to present a detailed and multi-faceted study of identity in language learning, teaching and revitalization settings in the context of Japan. It employs a diverse range of theoretical approaches, including poststructuralism, critical realism, cognitive behavioral theory, and complexity theory,, as well as methodologies such as linguistic ethnography, narrative enquiry, and critical multimodal discourse analysis. The authors focus on multiple dimensions of identity, illuminating linguistic, cultural and human complexity as manifested in language teaching and learning. This book will be of interest to advanced students and scholars of TESOL, applied linguistics, education, Japanese studies, East Asian studies, linguistic anthropology, indigenous languages and sociolinguistics.