This book focuses on the study-abroad experiences of pre-service and in-service language teachers and language teacher educators.The diverse contributions to this volume provide readers with a deep understanding of what this mobility means for individuals and the language teaching and learning communities they encounter and return to post-sojourn.Considering the broad variability of study-abroad programs and arrangements, as well as the multidimensional, complex nature of study-abroad social, geographical and digital environments, the chapters discuss the teachers’ psychological experiences in cognitive, affective and social terms.Readers will discover the effect of mobility on identity, beliefs, practices, self-efficacy, agency, self-confidence, independence and personal growth, as well as how transitions across borders can result in feelings of self-doubt, anxiety and insecurity.This is essential reading for language teacher educators, mentors and supervisors, managers of study-abroad programs and researchers working in the fields of study abroad, international education and language teacher education.