Cultural representation in media broadcasting is a crucial topic in communication research, as radio and television significantly shape public perceptions, cultural identities, and social dynamics. This literature review investigates the portrayal of cultural diversity in broadcasting, focusing on ethnicity, language, religion, gender, indigenous cultures, and minority identities. Utilizing academic works and institutional reports from 2018 to 2026, the review addresses various aspects such as representation, stereotyping, media ownership, broadcasting in indigenous languages, local content regulations, and the effects of digital streaming. The findings reveal that merely increasing visibility does not ensure fair representation, as marginalized groups often continue to face stereotyping, underrepresentation, or exclusion from decision-making. The case of Nigerian broadcasting highlights the challenges of balancing cultural preservation, commercial interests, globalization, and national unity. The review points out ongoing methodological and regional gaps, especially regarding audience interpretations and participation of minority cultures. It concludes that fostering inclusive broadcasting necessitates comprehensive policy implementation, culturally aware production, diverse media staff, and systematic evaluation of representation across both traditional and digital mediums.