Khao Sam Muk (เขาสามมุข), is a 45 m high hill in Chonburi Province, Thailand. It is located in Chonburi city right by the seashore of Bangkok Bay between Ang Sila and Bang Saen Beach. There is a Chinese shrine on the hill-top which affords views of the surrounding landscape, including Bang Saen Beach. There are many wild rhesus monkeys living in the bush on the sides of the hill. There are also cactus gardens on the hilltop and many restaurants below along the road flanking the shoreline.