This edited volume provides state of the art research on developing areas of Spanish in contact with other languages. This manuscript is unique in its broad yet coherent approach to the study of Spanish in bilingual contexts by investigating current issues in the field through well-designed research and innovative analyses. In addition, this book concludes with research on how languages in contact are reflected in individuals in educational settings as well as insights on how to teach bilinguals raised in contact with English and Spanish. This manuscript is divided into three major themes that focus on the overall issues of Spanish in bilingual contexts: 1. The first section, titled "Language and Identity," is composed of four chapters that focus on the connection between language and identity in unique settings. 2. The second section of the manuscript is titled "Language and Dialectal Contact" and is composed of six chapters that analyze the dialectal and linguistic changes in languages in contact in a variety of settings. 3. The final section is titled "Language in Educational Settings" and consists of four chapters with a focus on heritage speakers and second language students of Spanish in different classroom settings as well as abroad. This volume contributes original research in these areas in a way so as to fill valuable gaps in the current knowledge in the field especially in the innovative ways of approaching areas such as teaching heritage learners, understanding diachronic and synchronic dialectal and linguistic changes as well as innovations in language use, and how language contributes to the formation of identity.