Susan le Jeune d'Allegeershecque CMG OStJ (born Susan Jane Miller; born 29 April 1963) is a British diplomat who, most recently, served as British High Commissioner to Canada from 2017 to 2021.

[2][3] Educated at Ipswich High School for Girls, she took a BA degree from the University of Bristol and immediately joined the Foreign and Commonwealth Office in 1985.

[citation needed] She served in London and at the permanent representation to the European Union, the High Commission in Singapore, and the embassies in Venezuela, Colombia, and the United States.

[citation needed] In 2007, she took over as Director of Human Resources at the Foreign Office, replacing Sir David Warren.

[5][2] In February 2017, it was announced that le Jeune d'Allegeershecque would succeed Howard Drake from August 2017 as British High Commissioner to Canada.