is a town located in Asa District, Yamaguchi Prefecture, Japan.
As of 2003, the town has an estimated population of 22,131 and a density of 246.42 persons per km<sup>2</sup>. The total area is 89.81 km<sup>2</sup>.
On March 22, 2005, San'yà Â, along with the city of Onoda, was merged to create the city of San'yà Â-Onoda.