The 2017 Mount Albert by-election was a New Zealand by-election held in the Mount Albert electorate on 25 February 2017 during the 51st New Zealand Parliament. The seat was vacated following the resignation of David Shearer, a former Leader of the New Zealand Labour Party. The by-election was avoided by all right and centre-right parties, and turnout was low. The electorate was won by Labour Party list MP Jacinda Ardern by a large margin. Another Labour member, Raymond Huo, filled Ardern's list seat.