Edward David Gerard Llewellyn, Baron Llewellyn of Steep, OBE, PC (born 23 September 1965) is a British diplomat and former political adviser serving as the British Ambassador to Italy since 2022. He previously served as the British Ambassador to France from 2016 to 2021 and as the Downing Street Chief of Staff under former prime minister David Cameron from 2010 to 2016. In February 2022, he was appointed British ambassador to Italy. He presented his credentials to Italian president Sergio Mattarella on 7 April 2022.