Attje Harma Kuiken (Dutch pronunciation: [ˈɑcə ˈɦɑrmaː ˈkœykə(n)]; born 27 October 1977) is a Dutch politician and former civil servant serving as the leader of the Labour Party in the House of Representatives since 22 April 2022. She has been a parliamentarian since 30 November 2006 with a brief interruption in 2010.