N.D. Cent. Code § 12.1-20-11
12.1-20-11. Incest
12.1-20-11. Incest
A person who intermarries, cohabits, or engages in a sexual act with another person related
to him within a degree of consanguinity within which marriages are declared incestuous and
void by section 14-03-03, knowing such other person to be within said degree of relationship, is
guilty of a class C felony.