During the past decade, strong efforts made to unravel the linkage between numerous volcanic areas, throughout the world, and their geothermal energy resources have posed the base to convert volcanic risk into a potential clean energy resource. Volcanic geothermal systems are uniquely defined by specific combinations of tectonic environment and volcanic structure. In recognition of these conditions, development of robust interdisciplinary perspective of such geothermal systems from a volcanological, geophysical, geochemical and geo(hydro)thermal point of view is fundamental. We welcome contributions pertaining to all of these disciplines in order to quickly locate areas within volcanic fields that are most likely to contain exploitable hydrothermal systems. In addition, volcanoes and their products may be seen as initial windows to subsurface conditions, such as thermal regime and lithology; this information can greatly reduce errors involved in constraining the geothermal potential of different areas worldwide.