Hunab Ku

Hunab Ku is a Yucatec Maya word meaning "The Only God" used in colonial, and more particularly in doctrinal texts, to refer to the Christian God. Since the word is found frequently in the Chilam Balam of Chumayel, regarded by some as indigenous writing not influenced by Christianity, some authors have proposed that the name was originally used for an indigenous Maya deity, which was later transferred to the Christian god but recent research has shown this to be unlikely. Rather the word was a translation into Maya of the Christian concept of the "One God", used to enculturate the previously Polytheist Maya to the new Colonial religion.

References to Hunab Ku have figured prominently in New Age Mayanism such as that of José Argüelles.