This book presents and discusses theoretical and practical perspectives on English pronunciation theory, research and practice in order to establish evidence-based pronunciation teaching models, teaching and research priorities, and recommendations for best practices in teaching English pronunciation. The chapters provide a balanced view of theory and practice based on the authors’ empirical findings and their extensive professional experiences in English as a second/foreign language (ESL/EFL) and lingua franca contexts. The book identifies pronunciation teaching priorities that take into account individual learner variables, disseminates knowledge about theoretical frameworks, explores teachers’ and learners’ beliefs and practices regarding pronunciation instruction, and shares empirical findings regarding teacher education and teaching interventions in diverse contexts with English learners of different ages and language backgrounds. Overall, the chapters highlight the need to focus on intelligibility models that consider individual learner differences, and teacher and contextual variables.