When an unmarried couple has a child, whose last name does the child take?

Full question:

When an unmarried couple has a child, whose last name does the child take?

  • Category: Paternity
  • Date:
  • State: Arizona

Answer:

The Fourteenth Amendment protects a parent's freedom of choice in
naming one's child, and a state may not interfere with that right arbitrarily.
Since parents have a constitutionally protected right to choose the name of
their child, the state must at least show that any intrusion on that right has
a reasonable relationship to some state purpose. Accordingly, a statute
requiring an unmarried mother to register the child by the mother's
surname, while allowing a married mother to designate the child's surname
violates equal protection. However, it has been held that parents do not
have a constitutionally protected right to give a child a surname at birth with
which that child has no legally recognized parental connection.
Consequently, a statute pursuant to which the surname given to a child at
birth has to have a connection with at least one legally verifiable parent does
not unconstitutionally restrict the rights of parents.

Parents who have taken responsibility for the child have equal decisional
rights respecting that child. Under this view, no preference is accorded to
either the paternal or the maternal surname, and there is no legal
impediment to prevent married parents from giving their child the mother's
surname.

This content is for informational purposes only and is not legal advice. Legal statutes mentioned reflect the law at the time the content was written and may no longer be current. Always verify the latest version of the law before relying on it.

FAQs

Both parents have the right to choose their baby's last name, regardless of their marital status. The Fourteenth Amendment protects this parental right, allowing either parent to decide on the surname as long as it is legally connected to at least one parent.