At the forefront of research on English language teacher education and professional development, this volume presents new empirical research situated in different contexts around the world, including Canada, Denmark, Israel, Japan, Korea, Qatar, Sudan, and the U.S. It is framed by the volume editors’ insightful overview and analyses of previous and ongoing work in a variety of related domains and an epilogue by David Nunan. The chapter studies are organized around three themes: teacher identity in ESL/EFL teacher education and professional development programs, second language teacher education programs for diverse contexts, and professional development for diverse contexts. All chapters focus on the applied nature of the research and include a section on implications. To provide balance and a range of views, the volume includes both chapters reporting on empirical research funded by TIRF grant recipients and several from invited authors who are senior scholars in the field. This is the third volume in the Global Research on Teaching and Learning English Series, co-published by Routledge and TIRF.