13-3608. Incest; classification Persons who are eighteen or more years of age and are within the degrees of consanguinity within which marriages are declared by law to be incestuous and void, who knowingly intermarry with each other, or who knowingly commit fornication or adultery with each other are guilty of a class 4 felony.
Arizona Legal Code
§ 13.3608
Source: https://www.azleg.gov/ars/13/03608.htm· Version 2026