Jinyama Tumulus Cluster (陣山墳墓群) is a group of Yayoi period burial mounds, located in the Shijukan and Mukaeda neighborhoods of the city of Miyoshi, Hiroshima in the San'yō region of Japan.

The tumulus group was collectively designated a National Historic Site of Japan in 2000.

[1] Jinyama Tumulus Cluster consists of five burial mounds built from the top to the east side of a hill.

This style is unique to the late middle Yayoi period (1st century AD), and is most prevalent in western Japan in areas influenced by the Izumo culture.

[2] The site is about 11 minutes by car from Miyoshi Station on the JR West Geibi Line.