This open access volume showcases the intersection of geophysics and archaeology on a global scale, emphasising the evolution and application of geophysical methods in archaeological research and cultural heritage management. It compiles contributions from 74 experts based in 18 countries, with their research and case studies spanning across 24 different countries, focusing on the use of near-surface geophysical techniques and their integration with soil analyses and other methods to enrich archaeological interpretations. Prepared under the auspices of the collaborative network fostered by COST Action SAGA - CA17131, this work navigates through the successes and challenges encountered in the widespread adoption of archaeo-geophysical methods across diverse geographic and cultural landscapes. It offers a comprehensive chronicle of the genesis, maturation, and cutting-edge advancements in geophysical techniques, advocating for their amplified integration within the archaeological community. Incorporating an array of case studies and critical discussions on methodological and interpretive questions, the book underscores the importance of multidisciplinary collaboration, and defines perspectives for innovation and growth within the field. As an open-access work, 'WORLD ARCHAEO-GEOPHYSICS' aims to contribute to the democratisation of knowledge, fostering shared learning and cooperative engagement among professionals, academics, students and archaeology enthusiasts alike. Funded by the European Cooperation in Science and Technology (COST) and supported by the Norwegian University of Science and Technology (NTNU), this volume stands as a legacy of the resilient spirit of collaboration that defined the COST Action SAGA community, even in the face of pandemic challenges. It invites the academic and professional community to engage in new explorations and advancements, positioning itself as a reference for current and future endeavors in archaeo-geophysics.