Momoyama (桃山町 Momoyama-chō) was a town located in Naga District, Wakayama, Japan.
On November 11, 2005 Momoyama was merged with the towns of Kishigawa, Kokawa, Naga and Uchita, all from Naga District, to form the new city of Kinokawa.
As of 2003, the town had an estimated population of 8,090 and a density of 156.33 persons per km². The total area was 51.75 km².