Gemma Elizabeth Whelan (born 23 April 1981) is an English actress and comedian known for portraying Yara Greyjoy in the HBO fantasy-drama series Game of Thrones. She also plays Kate in all seasons of the comedy Upstart Crow, Detective Eunice Noon on the first season of The End of the F***ing World on Channel 4, and Geraldine on the third season of Killing Eve.