Margaret Henrietta Augusta Casely-Hayford[1] CBE (born 1959)[2] is a British lawyer, businesswoman and public figure who is active in the voluntary sector.

She is at the forefront of working to create diversity on boards[3][4] and is joint-manager of a rap artist and digital media entrepreneur.

[15] From 2000 to 2008, she was a government-appointed trustee of Great Ormond Street Children's Hospital Charity and of the Geffrye Museum and was on the development board of the Young Vic theatre.

[3] She is also a trustee of The Radcliffe Trust, one of Britain's oldest charities supporting classical music performance and training,[19] She chaired the diversity review conducted by CILIP in 2017 into the awarding of the Carnegie and Kate Greenaway Medals.

[30][31] In February 2018, she was announced as the new chair of the board of Shakespeare's Globe, taking over the appointment from Michael Bichard.

[3] She was appointed a Commander of the Order of the British Empire (CBE) in the 2018 Birthday Honours, for charitable services in the UK and abroad.

[42] In October 2019, it was announced that Casely-Hayford would be featured in the 2020 Powerlist as one of the 100 most influential black people in the United Kingdom.