Shisa is a traditional Ryukyuan cultural artifact and decoration derived from Chinese guardian lions, often seen in similar pairs, resembling a cross between a lion and a dog, from Okinawan mythology. Shisa are wards, believed to protect from some evils. People place pairs of shisa on their rooftops or flanking the gates to their houses, with the left shisa traditionally having a closed mouth, the right one an open mouth. The open mouth shisa traditionally wards off evil spirits, and the closed mouth shisa keeps good spirits in.

The Ryukyuan religion (琉球信仰), Ryūkyū Shintō (琉球神道), Nirai Kanai Shinkō (ニライカナイ信仰), or Utaki Shinkō (御嶽信仰) is the indigenous belief system of the Ryukyu Islands.