Kumayama, Okayama

 was a town located in Akaiwa District, Okayama Prefecture, Japan.
As of 2003, the town had an estimated population of 8,854 and a density of 193.61 persons per km². The total area was 45.73 km².
On March 7, 2005, Kumayama, along with the towns of Akasaka, San'yō and Yoshii (all from Akaiwa District), were merged to create the city of Akaiwa.