Juliet Jeanne d'Auvergne Campbell CMG (born 23 May 1935) is a retired British diplomat and academic administrator.
Born in London, Campbell is the daughter of Major-General Wilfred d'Auvergne Collings (1893—1984) and his wife Harriet Nancy Draper Bishop,[1] of Saint Peter Port, Guernsey, and was educated at the University of Oxford.
From 1961 to 1963 she was posted to the Common Market Delegation in Brussels, then returned to the Foreign Office for a year, before serving as a Second and later First Secretary at Bangkok until 1966.
After three years in the FO’s European Integration Department, she was posted as Counsellor (Information), to the British Embassy in Paris, 1977–1980.
After three years as Head of the Training Department at the FCO, 1984–1987, she served as British Ambassador to Luxembourg, 1988–1991, her final diplomatic appointment before she retired.