Photovoice: Principles, Methods and Techniques offers a comprehensive exploration of Photovoice as a participatory research methodology that blends photography, narrative, and dialogue to empower communities and influence change. Rooted in feminist theory, critical pedagogy, and participatory action research, Photovoice provides marginalized groups with the tools to document their lived experiences and transform them into powerful visual narratives that inform policy and advocacy. This volume brings together leading scholars and practitioners who demonstrate the versatility of Photovoice across diverse fields including education, health, youth studies, community development, and environmental sustainability. Chapters cover both foundational principles and innovative applications, such as integrating Internet of Things (IoT) devices and artificial intelligence into Photovoice analysis, exploring its role in health literacy and lifestyle interventions, and distinguishing between narrative and descriptive approaches in data interpretation. By combining theoretical insights with real-world examples, the book showcases how Photovoice bridges academic research with grassroots action. Accessible and practical, the book serves as both a methodological guide and an inspirational resource for researchers, educators, practitioners, and students. It underscores the enduring power of visual storytelling to democratize research, amplify community voices, and contribute to pressing global conversations on equity, inclusion, and sustainable development.