Co-cultural communication theory, or co-cultural theory for short, emerged from the scholarly research of Mark Orbe in the 1990s. A co-cultural theoretical approach provides a lens to understand how traditionally underrepresented group members communicate within societal structures governed by cultural groups that have, over time, achieved dominant group status. The theory’s foundation was established by Orbe and colleagues by exploring the communicative lived experiences of underrepresented group members in the United States; the earliest work engaged the communication of co-cultural groups defined through race, ethnicity, gender, socioeconomic status, disability, and sexual orientation. The theory centralizes the lived experiences of co-cultural group members and focuses on instances when cultural difference is regarded as salient. At its core, co-cultural theory explores one basic question: How do co-cultural group members use communication to negotiate their cultural identities with others (both like and unlike themselves) in a societal context where they are traditionally marginalized? Through discovery-oriented qualitative research, six factors emerged (field of experience, abilities, perceived costs and rewards, communication approach, preferred outcome, and situational context) as central to the selection of specific co-cultural practices. Since its inception, co-cultural theory has been embraced as a core theory for individuals interested in studying the intersection of culture, power, and communication.