Dame Karen Margaret Steyn, DBE (born 20 October 1970)[1] is a British High Court judge.

[2] She was educated at Tonbridge Grammar School and completed a BA in history at the University of Liverpool.

Following her bachelor's, she completed a postgraduate law conversion course at City University and she received Middle Temple's Harmsworth Scholarship.

[4] She took silk in 2014 and was appointed a deputy High Court judge in 2016.

[1] On 1 October 2019, Steyn was appointed a judge of the High Court, replacing the retiring Sir Timothy King, and assigned to the Queen's Bench Division.