was a town located in Imizu District, Toyama Prefecture, Japan.
As of 2003, the town had an estimated population of 12,419 and a density of 570.46 persons per km<sup>2</sup>. The total area was 21.77 km<sup>2</sup>.
On November 1, 2005, Daimon, along with the city of Shinminato, the towns of Kosugi and à Âshima, the village of Shimo (all from Imizu District), was merged to create the city of Imizu and no longer exists as an independent municipality.