This practical resource book showcases both the theory and practical application for teacher educators in diverse contexts bringing a global Englishes perspective into their teacher education courses, both at pre- and in-service levels. The recent Global Englishes paradigm serves as a promising response to the complexity of identity, interaction, use, and instruction surrounding the English language. It is increasingly important to enhance teachers’ knowledge base—their specialized knowledge, skills, competencies, and commitments—vis-à-vis the changing needs of English Language Teaching. The chapters in the book provide accessible theoretical orientation to different aspects of the Global Englishes paradigm, from instructional materials to language assessment, and are complemented by a range of practical applications that promote teacher development. The volume is recommended as a viable professional development resource for teacher educators who are looking for activities and resources in preparing teachers for diverse teaching contexts, realities, affordances, and constraints.