The New Zealand Constitution Amendment (Request and Consent) Act 1947 (New Zealand public act no. 38) and New Zealand Constitution Amendment Act 1947 (10 & 11 Geo. VI c. 46) were two enactments passed by the Parliament of New Zealand and Parliament of the United Kingdom respectively. The Acts contributed to the independence of New Zealand, by granting the Parliament of New Zealand the complete ability to amend the New Zealand Constitution Act 1852, an enactment of the Parliament of the United Kingdom which established the institutions of responsible government in New Zealand.
When the New Zealand Constitution Act 1852 was passed, the General Assembly established under the Act was unable to amend or repeal the Act. However, in 1857 the Parliament of the United Kingdom passed the New Zealand Constitution (Amendment) Act 1857, which allowed the New Zealand General Assembly the ability to amend certain provisions of the Act. This was taken up by the New Provinces Act 1858, and eventually the Abolition of the Provinces Act 1867.
When New Zealand adopted the Statute of Westminster 1931 with the Statute of Westminster Adoption Act 1947, the Parliament of New Zealand gained the ability to amend all enactments that were passed for New Zealand by the British Parliament. However, because the 1857 Act barred the Parliament of New Zealand from amending the Constitution Act, the New Zealand Parliament passed the New Zealand Constitution Amendment (Request and Consent) Act 1947. This was largely due to the desire of the opposition to abolish the New Zealand Legislative Council, the upper house, which was barred by the 1857 Act.
The New Zealand Constitution Amendment (Request and Consent) Act 1947, requested that the Parliament of the United Kingdom amend the New Zealand Constitution Act 1852, and consented to such changes (as required by the Statute of Westminster Adoption Act 1947). This is the only example of the Parliament of New Zealand requesting the Parliament of the United Kingdom to legislate on New Zealand's behalf, a process that was abolished with the Constitution Act 1986.