The Parliament of New Zealand consists of the Queen of New Zealand and the New Zealand House of Representatives and, until 1951, the New Zealand Legislative Council. However most people incorrectly refer to the House of Representatives as 'Parliament'. The House of Representatives usually consists of 120 Members of Parliament (currently 121 due to an overhang). MPs are directly elected by universal suffrage. New Zealand essentially follows the Westminster system of government, and is governed by a cabinet and Prime Minister chosen by the House of Representatives.

The Parliament was established by the British New Zealand Constitution Act 1852 which established a bicameral legislature, but the upper house, the Legislative Council, was abolished in 1951 so the legislature is now unicameral. Parliament received full control over all New Zealand affairs in 1947 with the passage of the Statute of Westminster Adoption Act.

Parliament is physically located in Wellington, the capital city of New Zealand since 1865.