Seochulji () is a pond in Namsan-dong, Gyeongju, South Korea. On July 11, 1964, it was designated Historic Site of South Korea No. 138.
It is a natural pond and has been long famed for its beauty. The pond is associated with a legend recorded in the Samguk yusa. Per the legend, King Soji (r. 749âÂÂ500) received a warning from an old man who emerged from the pond. The pond's name comes from this legend; it means "letter from the pond". A building used for leisure that dates to 1664 still remains at the northwest side of the pond.