A by-election was held in the Richmond (Yorks) constituency of the United Kingdom Parliament on 23 February 1989. It followed the resignation of the sitting Conservative Member of Parliament (MP) Leon Brittan on 31 December 1988, to allow him to take up the position of Vice-President of the European Commission.

Richmond (Yorks) is a constituency in North Yorkshire represented in the House of Commons of the UK Parliament since May 2015 by Rishi Sunak, the current Prime Minister of the United Kingdom and leader of the Conservative Party.