This core textbook offers a concise and interdisciplinary overview of the relationship between diversity and the media. Focusing on media regulation in democratic societies, each chapter explores how different conceptions of diversity relate to media audiences, media workforces, media outlets and media content. Drawing on research approaches grounded in the political economy of media, political communication, media economics and critical media industry studies, this insightful book analyses a wide range of current and historical examples from the UK, the US and Europe. This far-reaching and inclusive text is an invaluable resource for students and academics from media, communication studies, journalism, cultural studies and sociology backgrounds. Clear and accessible, it will also appeal to members of non-governmental organizations or activist groups involved in media policy and reform.