Fjord hydrodynamics is the scientific discipline dedicated to the study of water movement, circulation patterns, and associated physical processes within fjords. This field investigates phenomena such as stratification, mixing, currents, and tidal dynamics, which are profoundly influenced by unique fjord characteristics including complex bathymetry, freshwater inflow, and exchange with the open ocean, holding critical significance for understanding fjord ecosystems, sediment transport, and pollutant dispersal.