Kahuna is a Hawaiian word, defined in Pukui & Elbert (1986) as a "priest, sorcerer, magician, wizard, minister, expert in any profession". (See also Ancient Hawaii.)
Forty types of kahuna are listed in the book Tales from the Night Rainbow. Kamakau lists more than 20 in the healing professions alone, including for example "Kahuna la'au lapa'au" (an expert in herbal medicine) and "kahuna haha" (an expert in diagnosing illnesses).
With the revival of the Hawaiian culture beginning in the 1970s, some native Hawaiian cultural practitioners call themselves kahuna today. Others disdain the term. In the New Age spiritual system known as Huna, which uses Hawaiian words and appears to be appropriated or adapted from Hawaiian tradition, kahuna similarly denotes someone of priestly or shamanic standing.
Many myths have grown up around kahuna. One is that kahuna were outlawed after the white man came to Hawaii. It is known that there were many different types of kahuna. Kahuna can be divided into two categories: "craft" kahuna, such as kālai waʻa, an expert canoe maker, and hoʻokele, an expert navigator; "sorcerers" including kahuna ʻanāʻanā and lapaʻau (healer). According to one source, there were ten types (or ranks) of sorcery kahuna.
It is said that the one who can master all of the ten types, becomes a Kahuna Nui (Great Kahuna). It is known that Hewahewa, a direct descendant of Paʻao, was the Kahuna Nui to Kamehameha I.
Craft kahuna were never prohibited; however, during the decline of native Hawaiian culture many died out and did not pass on their wisdom to new students. As an example, when the Hōkūle‘a was built to be sailed to the South Pacific to prove the voyaging capabilities of the ancient Hawaiians, master navigator Mau Piailug from Satawal was brought to Hawaii to teach the Hawaiians navigation.
It is often said that the missionaries came to Hawaii in 1820 and made kahuna practices illegal. In the 100 years after the missionaries arrived all kahuna practices were legal until 1831, some were illegal until 1863, all were legal until 1887, then some were illegal until 1919. Since 1919, all have been legal, except sorcery, which was illegal at first, but was decriminalized in 1972.