The 2018 New Zealand National Party leadership election was held on 27 February 2018 to determine the 12th Leader of the National Party. On 13 February 2018, Bill English announced his resignation as leader of the National Party, effective on 27 February 2018. He left Parliament on 13 March 2018. On 20 February, Deputy Leader Paula Bennett announced that a concurrent deputy leadership election would take place, in which she would stand.

Sir Simon William English is a New Zealand former National Party politician who served as the 39th prime minister of New Zealand from 2016 to 2017. He had previously served as the 17th deputy prime minister of New Zealand and minister of finance from 2008 to 2016 under John Key and the Fifth National Government.