This chapter introduces organizational communication and defines key concepts. It discusses organizations as communicative structures that aim to control tensions between individual and organizational goals. Organizational communication is defined as the process of creating and negotiating collective meanings to achieve organizational ends. The chapter frames four major theoretical perspectives that study organizational communication differently based on their assumptions about knowledge, communication, and reality: functionalism, interpretivism, critical theory, and postmodernism. It concludes by noting feminism also analyzes issues of gender, power, and voice in organizations.