was a village located in Nakakubiki District, Niigata, Japan.
As of 2003, the village had an estimated population of 6,191 and a density of 157.29 persons per km<sup>2</sup>. The total area was 39.36 km<sup>2</sup>.
On January 1, 2005, Sanwa, along with the town of Yasuzuka, the villages of Maki, à Âshima and Uragawara (all from Higashikubiki District), the towns of Itakura, Kakizaki, à Âgata and Yoshikawa, the villages of Kiyosato, Kubiki and Nakagà  (all from Nakakubiki District), and the town of Nadachi (from Nishikubiki District), was merged into the expanded city of Jà Âetsu.