Dame Clare Moriarty DCB (born 6 April 1963) is the Chief Executive of Citizens Advice and a former British civil servant, who served as permanent secretary of the Department for Environment, Food and Rural Affairs between 2015 and 2019 and as Permanent Secretary of the Department for Exiting the European Union (DExEU) from March 2019 until January 2020.

[2] After leaving the Civil Service when DExEU was closed, she took up a new role as chief executive of Citizens Advice in April 2021.

[4] She studied mathematics at Balliol College, Oxford, graduating with a Bachelor of Arts (BA) degree in 1985.

[8] She was appointed Permanent Secretary for the Department for Environment, Food and Rural Affairs in August 2015.

[11] Following the departure of the United Kingdom from the EU at the end of January 2020 and the closure of the Department for Exiting the European Union, Moriarty left the civil service in March 2020.