Digital technologies and online platforms have fundamentally transformed how individuals communicate, construct identities, and participate in public life. Digital publics, formed through social media networks, online communities, and virtual communication spaces, increasingly shape social interaction, civic engagement, cultural expression, and political participation. Within these environments, digital identities are continuously developed through personal content creation, social interactions, and algorithmically mediated experiences. Emerging technologies provide new opportunities for inclusion, collaboration, and collective action while also raising important questions about privacy, representation, digital inequality, and the governance of online spaces. Understanding these evolving dynamics is essential for fostering more equitable, democratic, and participatory digital societies. Digital Publics, Identities, and Participation examines how digital technologies and online platforms influence the formation of individual and collective identities and shape interactions within digital public spaces. This book explores patterns of civic, social, cultural, and political participation in online environments, highlighting both the opportunities created by digital connectivity and the challenges associated with privacy, representation, digital inequality, and platform governance. Covering topics such as digital content creation, multimedia platforms, and social engineering, this book serves as a valuable resource for media and communications professionals, sociologists, researchers, scientists, policymakers, and students interested in understanding contemporary digital cultures and participation.