Henrietta Elizabeth Thompson, widely known as Liz Thompson (born 22 November 1961) is a Barbadian lawyer, politician and diplomat who has made significant contributions to sustainable energy policy. While an elected Member of Parliament representing the Barbados Labour Party for the St. James South constituency from 1994 to 2008, she served for shorter periods as Minister of Health, Minister of Housing, Minister of Physical Development, and finally Minister of Energy and Environment. She joined the United Nations in 2010, first serving as Assistant to the Secretary General, as Special Adviser to the UN President (2013 and 2014) then as Senior Adviser on Sustainable Energy for All (2014 and 2015). In 2018, she was appointed Permanent Representative of Barbados to the United Nations.