Sonohyan-utaki is a sacred grove of trees and plants (utaki) of the traditional indigenous Ryukyuan religion. It is located on the grounds of Shuri Castle in Naha, Okinawa, a few paces away from the Shureimon castle gate. The utaki, or more specifically its stone gate , is one of a number of sites which together comprise the UNESCO World Heritage Site officially described as Gusuku Sites and Related Properties of the Kingdom of Ryukyu, and has been designated an Important Cultural Property by the Japanese national government.