Catriona Wendy Campbell Laing CB is a British civil servant and diplomat who has been serving as United Nations Secretary-General António Guterres' Special Representative for Somalia and Head of the United Nations Assistance Mission in Somalia (UNSOM) since 2023.

She then joined the Overseas Development Administration, which was then an agency of the Foreign and Commonwealth Office (FCO).

She was seconded to the Cabinet Office as deputy director of the Prime Minister's strategy unit 2001–05, then was head of DFID's International Division Advisory Department 2005–06, head of DFID in Sudan 2006–09, and director, human rights and international, at the Ministry of Justice 2009–12.

She then joined the FCO and was the UK's senior civilian representative to the NATO operation in southern Afghanistan 2012–13.

[4] After four years in that post she was appointed to be High Commissioner to Nigeria from November 2018.