This chapter clarifies and underscores the importance of interdisciplinarity in CDA/CDS research, and then provides an overview of its salient and well-known connections to other areas of scholarship. While we do not claim to capture every area that CDA/CDS has influenced or been influenced by, we cover those that explicitly make a connection to, and/or integrate, CDA/CDS perspectives and theories, and we also note when the relationship is two-way. Our discussion will include the following fields: critical applied linguistics, education, anthropology/ethnography, sociolinguistics, gender studies, queer linguistics, pragmatics and ecolinguistics. For each one, we describe the major focus of research as well as important concepts and how they connect to, or derive from, CDA/CDS. We then provide examples of work in each of these areas including a detailed list of references for each section for those interested in knowing more.