was a town located in Kaisō District, Wakayama Prefecture, Japan.

As of 2003, the town had an estimated population of 14,481 and a density of 363.57 persons per km2. The total area was 39.83 km2.

On April 1, 2005, Shimotsu was merged into the expanded city of Kainan.

External links Official town website (in Japanese)