thumb|Monument marking location of former Samizu village hall
was a village located in Kamiminochi District, Nagano Prefecture, Japan.
As of 2003, the village had an estimated population of 5,395 and a density of 152.14 persons per km2. The total area was 35.46 km2.
On October 1, 2005, Samizu, along with the village of Mure (also from Kamiminochi District), was merged to create the town of Iizuna.[1]