The Children's Commissioner Act 2003 (Public Act no 121 2003) is an Act of the Parliament of New Zealand. It reformed the office of the Children's Commissioner and implemented the United Nations Convention on the Rights of the Child, which is attached as schedule three of the act. Before the act, Children's Commissioners were established under the Children, Young Persons, and Their Families Act 1989. Holders of the office have been of differing opinions on the controversy over the autopsy images of Ngatikaura Ngati.