Masuda was a town located in Hiraka District, Akita Prefecture, Japan.
In 2003, the town had an estimated population of 8,733 and a density of 117.68 persons per km². The total area was 74.21 km².
On October 1, 2005, Masuda, along with the towns of Hiraka, Jūmonji, Omonogawa and Ōmori; and the villages of Sannai and Taiyū, was merged into the expanded city of Yokote.