Dame Cressida Rose Dick, born 16 October 1960 in Oxford, England, is a British former senior police officer who became the first woman and first openly lesbian Commissioner of the Metropolitan Police Service, serving from 2017 to 2022 (specifically from 5 April 2017 to 10 February 2022). She graduated from Balliol College, Oxford, with a degree in Philosophy, Politics, and Economics (PPE). Dick joined Thames Valley Police in 1983 as a constable, later transferring to the Metropolitan Police where she held key roles including head of the Specialist Firearms Command (SO19) and the Counter Terrorist Command. She was the Gold Commander on duty during the 7 July 2005 London bombings response.

Throughout her career, Dick faced significant controversies. She oversaw Operation Midland (2014-2016), an investigation into false allegations of a VIP paedophile ring, later criticized as a 'debacle' by Judge Sir Richard Henriques for failures in due process. Her tenure as Commissioner drew criticism for the Metropolitan Police's handling of the 2021 Clapham Common vigil for murdered officer Sarah Everard, where women were arrested; the scandal involving officer Wayne Couzens, who raped and murdered Everard despite prior complaints; and serial rapist officer David Carrick's undetected crimes spanning 20 years. She was accused of misleading statements on Couzens' vetting and faced backlash over stop-and-search practices and protests during COVID-19 and Black Lives Matter events. These issues culminated in her resignation in February 2022 after London Mayor Sadiq Khan withdrew support amid the Casey Review highlighting institutional racism, misogyny, and homophobia in the Met. Post-resignation, she has undertaken non-executive roles including at the Foreign, Commonwealth & Development Office.