Sannan was a town located in Hikami District, Hyōgo Prefecture, Japan. As of 2003, the town had an estimated population of 13,268 and a density of 135.17 persons per km2. The total area was 98.16 km2. On November 1, 2004, Sannan, along with the towns of Hikami, Aogaki, Ichijima, Kaibara and Kasuga, was merged to create the city of Tamba and no longer exists as an independent municipality.