Karin Hildur "Kajsa" Ollongren (born 28 May 1967) is a Dutch-Swedish politician serving as second Deputy Prime Minister of the Netherlands and Minister of the Interior and Kingdom Relations in the Third Rutte cabinet since 26 October 2017.
She is a member of the Democrats 66 (D66) party.
Since 1 November 2019 she is on medical leave of absence until the end of 2019.