Chuon Nath (Khmer: ជួន ណាត; 11 March 1883 – 25 September 1969) was a Cambodian monk and the late Gana Mahanikaya Supreme Patriarch of Cambodia.

In 1922, he and another monk, Huot Tat, were invited by Louis Finot to study Sanskrit at the École française d’Extrême-Orient in Hanoi, French Indochina.

Nath was the head of a reformist movement in the Khmer Buddhist Sangha which developed a rationalist-scholastic model of Buddhism, rooted in linguistic studies of the Pali Canon.

Nath pushed for a series of innovations in the Khmer Sangha beginning in the early twentieth century: the use of print for sacred texts (rather than traditional methods of hand-inscribing palm-leaf manuscripts); a higher degree of expertise in Pali and Sanskrit studies among monks; a vision of orthodoxy based on teaching of Vinaya texts for both monks and lay-people; and modernization of teaching methods for Buddhist studies.

Nath dedicated his life to upholding Buddhism and the conservation of Khmer language in the country that was highly influenced by French colonialism.

What Nath meant by "Khmerization" was he wanted to derive new Khmer words from its ancestral roots, the Pali and Sanskrit languages.

Nath's other contribution to Cambodia include the current national anthem, "Nokor Reach", for which he composed both music and lyrics.