Case studies of individual language learners are a valuable means of illustrating issues connected with learning, using, and in some cases, losing another language. Yet, even though increasing numbers of graduate students and scholars conduct research using case studies or mix quantitative and qualitative methods, there are no dedicated applied linguistics research methods texts that guide one through the case study process. This book fills that gap. The volume provides an overview of case study methodology and examples of published case studies in applied linguistics, without attempting to be a comprehensive survey of the innumerable case studies that exist. The case studies presented here involve teachers and learners of English and various other languages in North America and other parts of the world. Advice is also given about how to conduct and publish case studies. Case Study Research in Applied Linguistics is designed for students, both undergraduate and graduate, as well as other scholars seeking to understand case study methods and their applications in research on language learners and language users in a variety of contexts. Applied linguists working in other subfields will find the volume useful in their own research and in their supervision and evaluation of others' case studies.