Letters Patent Constituting the Office of Governor-General of New Zealand

The Letters Patent Constituting the Office of Governor-General of New Zealand is a royal decree and a part of the uncodified New Zealand constitution. Sometimes known as the Letters Patent 1983, the instrument has been amended twice (in 1987 and 2006) since its original issue in 1983. The letters patent—essentially an open letter from Queen Elizabeth II that is a legal instrument—constitutes the office of governor-general as the monarch's representative in the Realm of New Zealand, vests executive authority in the governor-general, establishes the Executive Council to advise the governor-general, and makes provision for the exercise of the governor-general's powers should the office be vacant.