Large earthquakes, tsunamis, and slope failures (subaerial or submarine) are among the most dangerous and powerful geohazards occurring on Earth. These sudden events can have impacts on populations, infrastructure, and habitats across local, regional, and transoceanic scales. Sedimentary records, particularly in marine and lacustrine environments where such catastrophic events are often well preserved, provide opportunities for detailed investigations of such geohazards. We encourage submissions that integrate onshore and offshore geological, geophysical, geochronological, and/or geochemical datasets from marine, coastal, or lacustrine environments along active or passive margins, to provide constraints on recurrence and spatial extent for hazardous events, the potential for future cascading hazards (i.e., an initial hazard triggering additional hazards), or link fundamental geological processes to the assessment of marine and lacustrine geohazards.