Kosugi, Toyama

 was a town located in Imizu District, Toyama Prefecture, Japan.
As of 2003, the town had an estimated population of 32,770 and a density of 795.00 persons per km². The total area was 41.22 km².
On November 1, 2005, Kosugi, along with the city of Shinminato, the towns of Daimon and Ōshima, the village of Shimo (all from Imizu District), was merged to create the city of Imizu and no longer exists as an independent municipality.