Volcanism and tectonism are two of the most ubiquitous processes at work in the Solar System, shaping substantially the surfaces of worlds as diverse as the terrestrial planets, main-belt asteroids, and icy satellites. Through a combination of solicited and contributed presentations, this session will host observational, laboratory, theoretical, or analogue fieldwork research into any aspect of planetary volcanic and tectonic activity. We particularly welcome submissions that compare landforms and processes on multiple bodies, and how lessons from specific studies can be applied to understanding volcanism and tectonism across the Solar System.