Plate subduction is directly or indirectly responsible for earthquakes along the plate interface, within the subducting plate, and across broad areas of the overriding plate. Studying these earthquakes and their interconnections helps us better understand subduction zones and broader-scale geodynamics and improve earthquake and tsunami hazard assessment. This session provides a forum for the geophysical and geological communities to share observations, models, and ideas on how subduction processes generate and influence a wide range of earthquakes. It encourages discussion not only on earthquakes within subduction zones but also of those in adjacent intraplate environments. We welcome contributions on, but not limited to, the following topics: the structure and properties of subduction megathrust, seismic and aseismic fault slip, stress and strain through earthquake cycles, intraplate seismicity associated with subduction, geological and paleoseismic studies of faults, imaging of tectonic structures responsible for earthquakes, and long-term geodynamics controlling earthquake occurrence.