Kuksu, also called the Kuksu Cult, was a religion in Northern California practiced by members within several Indigenous peoples of California before and during contact with the arriving European settlers. The religious belief system was held by several tribes in Central California and Northern California, from the Sacramento Valley west to the Pacific Ocean.
The practice of Kuksu religion included elaborate narrative ceremonial dances and specific regalia. The men of the tribe practiced rituals to ensure good health, bountiful harvests, hunts, fertility, and good weather. Ceremonies included an annual mourning ceremony, rites of passage, and intervention with the spirit world. A male secret society met in underground dance rooms and danced in disguises at the public dances.
Kuksu has been identified archaeologically by the discovery of underground dance rooms and wooden dance drums.
The Patwin culture of Northern California had comparatively strong and noticeable Kuksu systems and rituals.
The Maidu culture of Northern California had comparatively strong and noticeable Kuksu systems and rituals.
Kuksu was personified as a spirit being by the Pomo people. Their mythology and dance ceremonies were witnessed, including the spirit of Kuksu or Guksu, between 1892 and 1904. The Pomo used the name Kuksu or Guksu, depending on the dialect, as the name for a red-beaked supernatural being, that lived in a sweathouse at the southern end of the world. Healing was his province and specialty. The person who played the Kuksu/Guksu in Pomo dance ceremonies was often considered the medicine man, and dressed as him when attending the sick. A ceremony dance was named after him. He also appeared in costume at most ceremonies briefly in order to take away the villager's illnesses.