Iowa Code § 598.37: Name change.

Either party to a marriage may request as a part of the decree of dissolution or decree of annulment a change in the person’s name to either the name appearing on the person’s birth certificate or to the name the person had immediately prior to the marriage. If a party requests a name change other than to the name appearing on the person’s birth certificate or to the name the person had immediately prior to the marriage, the request shall be made under chapter 674.