New Zealand First, commonly abbreviated to NZ First or NZF, is a political party in New Zealand, led by and identified with veteran politician Winston Peters, who has served three times as deputy prime minister. The party has formed coalition governments with both major political parties in New Zealand: with the New Zealand National Party from 1996 to 1998 and 2023 to present, and with the New Zealand Labour Party from 2005 to 2008 and 2017 to 2020. New Zealand First currently serves in a coalition government with both National and ACT as part of the Sixth National government, having won 6.08% of the total party vote in the 2023 New Zealand general election.

The 2023 New Zealand general election was held on 14 October 2023 to determine the composition of the 54th Parliament of New Zealand. Voters elected 122 members to the unicameral New Zealand House of Representatives under the mixed-member proportional (MMP) voting system, with 71 members elected from single-member electorates and the remaining members elected from closed party lists. Of the 72 electorates, only 71 seats were filled, with the remaining electorate MP determined in the 2023 Port Waikato by-election, due to the death of one of the general election candidates. Two overhang seats were added due to Te Pāti Māori winning six electorate seats when the party vote only entitled them to four seats, with an additional overhang seat added after the by-election making for 123 members of parliament.