North Carolina
N.C. General Statute 14-400(a) states: “It shall be unlawful for any person or persons to tattoo the arm, limb, or any part of the body of any other person under 18 years of age. Anyone violating the provisions of this section shall be guilty of a Class 2 misdemeanors.
http://en.wikipedia.org/wiki/Legal_status_of_tattooing_in_the_United_States