Nankō (南光町, Nankō-chō) was a town located in Sayō District, Hyōgo Prefecture, Japan.
As of 2003, the town had an estimated population of 4,432 and a population density of 88.89/km2 (230.2/sq mi). The total area was 49.86 km2 (19.25 sq mi).
On October 1, 2005, Nankō, along with the towns of Kōzuki and Mikazuki (all from Sayō District), was merged into the expanded town of Sayō.[1]