Typhoon 0314(Maemi) landed on the south coast of Korea at 21LST, 12 September, 2003, where its storm surge accompanying with high waves and astronomical high tide induced the most severe coastal disaster in Korea. Especially Masan City facing Masan Bay had the worst damages by the storm-surge flooding with the maximum surge height of ~2.3m recorded at Masan Port. In order to obtain the design surge-heights for the coastal structures in Masan City, a hindcasting study of storm surge for Typhoon 0314 were conducted using a fine-scaled regional surge model which was connected to the larger scaled surge models by a nesting grid system. The sea surface pressure and wind fields were computed by a primitive vortex wind model to obtain the input data for storm surge model simulation. The hindcasted surge heights were compared with the observed surges at Masan Port and also were compared with the surge data recorded at the major tide stations in the south coast of Korea. The result shows that the computed surges were in a good agreement with the observations.