Iowa Code § 674.6
3. If the petition includes or is filed on behalf of a minor child under fourteen, both parents as stated on the birth certificate of the minor child shall file their written consent to the name change. If one of the parents does not consent to the name change, a hearing shall be set on the petition on twenty days’ notice to the nonconsenting parent pursuant to the rules of civil procedure. At the hearing the court may waive the requirement of consent as to one of the parents if it finds any of the following:
[C73, 75, 77, 79, 81, §674.6; 81 Acts, ch 201, §3] 85 Acts, ch 99, §12; 2018 Acts, ch 1041, §113