This book sets out duoethnography as a method of research, reflective practice and as a pedagogical approach in English Language Teaching (ELT). The book provides an introduction to the history of duoethnography and lays out its theoretical foundations. The chapters then address duoethnography as a research method which can be used to explore critical and personal issues among ELT teachers, discuss how duoethnography as a reflective practice can aid teachers in understanding themselves, their colleagues or their context, and demonstrate how duoethnography can be used as a pedagogical tool in ELT classrooms. The chapters are a range of duoethnographies from established and emerging researchers and teachers, which explore the interplay between cultural discourses and life histories with a focus on ELT in Japan.