This introduction to major topics in the field of Arabic sociolinguistics examines key issues in diglossia, code-switching, gendered discourse, language variation and change, and language policies. It introduces and evaluates various theoretical approaches and models, and it illustrates the usefulness and limitations of these approaches to Arabic with empirical data. Reem Bassiouney explores how current sociolinguistic theories can be applied to Arabic and, conversely, what the study of Arabic can contribute to our understanding of the function of language in society. Graduate students of Arabic language and linguistics as well as students of sociolinguistics with no knowledge of Arabic will find this volume to be an indispensable resource.