Beryl Catherine Platt, Baroness Platt of Writtle CBE DL FRSA FREng HonFIMechE (née Myatt; 18 April 1923 – 1 February 2015) was a British Conservative politician and member of the House of Lords. Her background was in engineering, and she worked in aeronautics and aviation safety. She retained a strong interest in science and technology, particularly the role and advancement of women in these fields.