Coastal landscapes consist of complex and dynamic landforms whose morphodynamics are influenced by autogenic processes, natural external forcings, climate change, and direct anthropogenic interactions. These processes act on and are recorded in the landscape over a wide range of spatial and temporal scales. By extension, coastal zone research is expansive, ranging from long-term and broad-scale to short-term and fine-scale processes. The 2021 Coastal Geomorphology and Morphodynamics session welcomes contributions based on field observations, development and application of models, emerging coastal monitoring techniques, investigations of sedimentary deposits, physical experiments, and interdisciplinary research linking coastal geomorphology and/or morphodynamics with biology, ecology, economics, policy, and social sciences. Submissions are encouraged from studies covering a wide range of coastal settings including natural and developed beaches, coastal dunes, barrier islands, rocky coasts, estuaries, deltas, lagoons, natural or restored marshes, mangroves, seagrasses or reef islands, carbonate environments, and high-latitude regions.